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- [ sal ] what i want to do in this video is think about the idea of a fraction . and for the sake of this video as we just learn what a fraction is , you can really think of it as a part of a whole . later on we 'll think of it in even more ways . what do i mean by a part of a whole ? so let 's imagine that we have a ...
well this fraction has cheese , but it also has olives so we wo n't count that . then we have one , two , three , three fractions three of these equal pieces have only cheese so we could say three out of a total of four pieces of . .
what are fractions and why do we have them ?
- [ sal ] what i want to do in this video is think about the idea of a fraction . and for the sake of this video as we just learn what a fraction is , you can really think of it as a part of a whole . later on we 'll think of it in even more ways . what do i mean by a part of a whole ? so let 's imagine that we have a ...
well this fraction has cheese , but it also has olives so we wo n't count that . then we have one , two , three , three fractions three of these equal pieces have only cheese so we could say three out of a total of four pieces of . .
how do you find eqiavalent fractions ?
- [ sal ] what i want to do in this video is think about the idea of a fraction . and for the sake of this video as we just learn what a fraction is , you can really think of it as a part of a whole . later on we 'll think of it in even more ways . what do i mean by a part of a whole ? so let 's imagine that we have a ...
just like that . and let me divide it into let me divide it into 5 equal pieces 1 one , two , three , four that does n't look too equal . so the whole point is to do it equal , one , two , three , four that looks pretty close .
how do we multiply fractions and divide ?
- [ sal ] what i want to do in this video is think about the idea of a fraction . and for the sake of this video as we just learn what a fraction is , you can really think of it as a part of a whole . later on we 'll think of it in even more ways . what do i mean by a part of a whole ? so let 's imagine that we have a ...
just like that . and let me divide it into let me divide it into 5 equal pieces 1 one , two , three , four that does n't look too equal . so the whole point is to do it equal , one , two , three , four that looks pretty close .
sometimes i forget how do divide certain things most the times i forget to divide everything is there anyway i could remember to divide ?
- [ sal ] what i want to do in this video is think about the idea of a fraction . and for the sake of this video as we just learn what a fraction is , you can really think of it as a part of a whole . later on we 'll think of it in even more ways . what do i mean by a part of a whole ? so let 's imagine that we have a ...
well this fraction has cheese , but it also has olives so we wo n't count that . then we have one , two , three , three fractions three of these equal pieces have only cheese so we could say three out of a total of four pieces of . .
why do we use fractions in multiplying and dividing ?
- [ sal ] what i want to do in this video is think about the idea of a fraction . and for the sake of this video as we just learn what a fraction is , you can really think of it as a part of a whole . later on we 'll think of it in even more ways . what do i mean by a part of a whole ? so let 's imagine that we have a ...
well this fraction has cheese , but it also has olives so we wo n't count that . then we have one , two , three , three fractions three of these equal pieces have only cheese so we could say three out of a total of four pieces of . .
who is good at fractions ?
- [ sal ] what i want to do in this video is think about the idea of a fraction . and for the sake of this video as we just learn what a fraction is , you can really think of it as a part of a whole . later on we 'll think of it in even more ways . what do i mean by a part of a whole ? so let 's imagine that we have a ...
just like that . and let me divide it into let me divide it into 5 equal pieces 1 one , two , three , four that does n't look too equal . so the whole point is to do it equal , one , two , three , four that looks pretty close .
why is 1 out f 4 ?
- [ sal ] what i want to do in this video is think about the idea of a fraction . and for the sake of this video as we just learn what a fraction is , you can really think of it as a part of a whole . later on we 'll think of it in even more ways . what do i mean by a part of a whole ? so let 's imagine that we have a ...
so let 's say i have a candy bar . just like that . and let me divide it into let me divide it into 5 equal pieces 1 one , two , three , four that does n't look too equal . so the whole point is to do it equal , one , two , three , four that looks pretty close .
fractions like 3/6 and 12/4 are equal to 2 and 3 , is there a more simple way to figure 2/5 times 45/5 ?
- [ sal ] what i want to do in this video is think about the idea of a fraction . and for the sake of this video as we just learn what a fraction is , you can really think of it as a part of a whole . later on we 'll think of it in even more ways . what do i mean by a part of a whole ? so let 's imagine that we have a ...
well this fraction has cheese , but it also has olives so we wo n't count that . then we have one , two , three , three fractions three of these equal pieces have only cheese so we could say three out of a total of four pieces of . .
how do you convert fractions ?
- [ sal ] what i want to do in this video is think about the idea of a fraction . and for the sake of this video as we just learn what a fraction is , you can really think of it as a part of a whole . later on we 'll think of it in even more ways . what do i mean by a part of a whole ? so let 's imagine that we have a ...
- [ sal ] what i want to do in this video is think about the idea of a fraction . and for the sake of this video as we just learn what a fraction is , you can really think of it as a part of a whole .
how do plot decimals on the numberline ?
- [ sal ] what i want to do in this video is think about the idea of a fraction . and for the sake of this video as we just learn what a fraction is , you can really think of it as a part of a whole . later on we 'll think of it in even more ways . what do i mean by a part of a whole ? so let 's imagine that we have a ...
well this fraction has cheese , but it also has olives so we wo n't count that . then we have one , two , three , three fractions three of these equal pieces have only cheese so we could say three out of a total of four pieces of . .
what is the difference between fractions and rational numbers ?
- [ sal ] what i want to do in this video is think about the idea of a fraction . and for the sake of this video as we just learn what a fraction is , you can really think of it as a part of a whole . later on we 'll think of it in even more ways . what do i mean by a part of a whole ? so let 's imagine that we have a ...
well this fraction has cheese , but it also has olives so we wo n't count that . then we have one , two , three , three fractions three of these equal pieces have only cheese so we could say three out of a total of four pieces of . .
why do we need fractions in life ?
- [ sal ] what i want to do in this video is think about the idea of a fraction . and for the sake of this video as we just learn what a fraction is , you can really think of it as a part of a whole . later on we 'll think of it in even more ways . what do i mean by a part of a whole ? so let 's imagine that we have a ...
well this fraction has cheese , but it also has olives so we wo n't count that . then we have one , two , three , three fractions three of these equal pieces have only cheese so we could say three out of a total of four pieces of . .
how do you do fractions without the pictures ?
- [ sal ] what i want to do in this video is think about the idea of a fraction . and for the sake of this video as we just learn what a fraction is , you can really think of it as a part of a whole . later on we 'll think of it in even more ways . what do i mean by a part of a whole ? so let 's imagine that we have a ...
.is yellow ? '' `` what fraction of my fruit as drawn is yellow ? '' well , we could say , we have a total of one , two , three , four , five pieces of fruit so there 's a total of five pieces of fruit .
what does the word fraction mean ?
- [ sal ] what i want to do in this video is think about the idea of a fraction . and for the sake of this video as we just learn what a fraction is , you can really think of it as a part of a whole . later on we 'll think of it in even more ways . what do i mean by a part of a whole ? so let 's imagine that we have a ...
well this fraction has cheese , but it also has olives so we wo n't count that . then we have one , two , three , three fractions three of these equal pieces have only cheese so we could say three out of a total of four pieces of . .
what would we do without fractions ?
- [ sal ] what i want to do in this video is think about the idea of a fraction . and for the sake of this video as we just learn what a fraction is , you can really think of it as a part of a whole . later on we 'll think of it in even more ways . what do i mean by a part of a whole ? so let 's imagine that we have a ...
two fifths is yellow . let me do one more example to just really make the point clear . so let me draw a candy bar , and this is all food-related .
how do u energy point hack ?
- [ sal ] what i want to do in this video is think about the idea of a fraction . and for the sake of this video as we just learn what a fraction is , you can really think of it as a part of a whole . later on we 'll think of it in even more ways . what do i mean by a part of a whole ? so let 's imagine that we have a ...
well this fraction has cheese , but it also has olives so we wo n't count that . then we have one , two , three , three fractions three of these equal pieces have only cheese so we could say three out of a total of four pieces of . .
what 's the comparison between fractions ?
- [ sal ] what i want to do in this video is think about the idea of a fraction . and for the sake of this video as we just learn what a fraction is , you can really think of it as a part of a whole . later on we 'll think of it in even more ways . what do i mean by a part of a whole ? so let 's imagine that we have a ...
well this fraction has cheese , but it also has olives so we wo n't count that . then we have one , two , three , three fractions three of these equal pieces have only cheese so we could say three out of a total of four pieces of . .
how do a math problem with fractions used in sentences ?
- [ sal ] what i want to do in this video is think about the idea of a fraction . and for the sake of this video as we just learn what a fraction is , you can really think of it as a part of a whole . later on we 'll think of it in even more ways . what do i mean by a part of a whole ? so let 's imagine that we have a ...
just like that . and let me divide it into let me divide it into 5 equal pieces 1 one , two , three , four that does n't look too equal . so the whole point is to do it equal , one , two , three , four that looks pretty close .
when you divide fractions , does the order matter ?
- [ sal ] what i want to do in this video is think about the idea of a fraction . and for the sake of this video as we just learn what a fraction is , you can really think of it as a part of a whole . later on we 'll think of it in even more ways . what do i mean by a part of a whole ? so let 's imagine that we have a ...
. actually i 'll draw an apple . it 's a little bit of a strange color for an apple , but we 'll go with it .
i am trying to imagine this in form of apple : so if had 0.5 a ( apple ) x 0.5 = 0.25 a so i get that half apple x 0.5 it valve give your quarter apple : now this where i find had to grasp 0.25 a / 0.5 = 0.5 ?
- [ sal ] what i want to do in this video is think about the idea of a fraction . and for the sake of this video as we just learn what a fraction is , you can really think of it as a part of a whole . later on we 'll think of it in even more ways . what do i mean by a part of a whole ? so let 's imagine that we have a ...
only only cheese . and lets say on this fourth slice , i have cheese and , i do n't know , i have olives i have olives right over here . so we can ask ourselves , `` what fraction of this pizza has olives on it ? ''
how do you know all these fractions ?
- [ sal ] what i want to do in this video is think about the idea of a fraction . and for the sake of this video as we just learn what a fraction is , you can really think of it as a part of a whole . later on we 'll think of it in even more ways . what do i mean by a part of a whole ? so let 's imagine that we have a ...
- [ sal ] what i want to do in this video is think about the idea of a fraction . and for the sake of this video as we just learn what a fraction is , you can really think of it as a part of a whole .
if i had 10 15/17 - 6/17 how would i get the answer ?
- [ sal ] what i want to do in this video is think about the idea of a fraction . and for the sake of this video as we just learn what a fraction is , you can really think of it as a part of a whole . later on we 'll think of it in even more ways . what do i mean by a part of a whole ? so let 's imagine that we have a ...
well this fraction has cheese , but it also has olives so we wo n't count that . then we have one , two , three , three fractions three of these equal pieces have only cheese so we could say three out of a total of four pieces of . .
will fractions realate to the real world , other than cutting pizzas ?
- [ sal ] what i want to do in this video is think about the idea of a fraction . and for the sake of this video as we just learn what a fraction is , you can really think of it as a part of a whole . later on we 'll think of it in even more ways . what do i mean by a part of a whole ? so let 's imagine that we have a ...
have been eaten . so i 'll leave you there , maybe i 'll make another video that does n't have as many food analogies , but this is a super useful concept and i encourage you to think about this as much as possible and then try the exercises on khan academy
how much did heather pay ?
- [ sal ] what i want to do in this video is think about the idea of a fraction . and for the sake of this video as we just learn what a fraction is , you can really think of it as a part of a whole . later on we 'll think of it in even more ways . what do i mean by a part of a whole ? so let 's imagine that we have a ...
so we can ask ourselves , `` what fraction of this pizza has olives on it ? '' well , we have four total slices . they all are equal slices .
how much was the total bill ?
- [ sal ] what i want to do in this video is think about the idea of a fraction . and for the sake of this video as we just learn what a fraction is , you can really think of it as a part of a whole . later on we 'll think of it in even more ways . what do i mean by a part of a whole ? so let 's imagine that we have a ...
we have four equal sections here and one of those equal sections has olives , so we could say one-fourth of this pizza one-fourth of the pizza the pizza , has , has olives . one out of the four . now someone said , `` well what fraction of this pizza only has cheese ? `` .
a circle with four `` cuts '' as shown in the video , would always be one whole , correct ?
- [ sal ] what i want to do in this video is think about the idea of a fraction . and for the sake of this video as we just learn what a fraction is , you can really think of it as a part of a whole . later on we 'll think of it in even more ways . what do i mean by a part of a whole ? so let 's imagine that we have a ...
two fifths is yellow . let me do one more example to just really make the point clear . so let me draw a candy bar , and this is all food-related .
what is the main point of fractions ?
- [ sal ] what i want to do in this video is think about the idea of a fraction . and for the sake of this video as we just learn what a fraction is , you can really think of it as a part of a whole . later on we 'll think of it in even more ways . what do i mean by a part of a whole ? so let 's imagine that we have a ...
.is yellow ? '' `` what fraction of my fruit as drawn is yellow ? '' well , we could say , we have a total of one , two , three , four , five pieces of fruit so there 's a total of five pieces of fruit .
why is the name of `` fraction '' fraction ?
- [ sal ] what i want to do in this video is think about the idea of a fraction . and for the sake of this video as we just learn what a fraction is , you can really think of it as a part of a whole . later on we 'll think of it in even more ways . what do i mean by a part of a whole ? so let 's imagine that we have a ...
so let 's assume that these are equal pieces . so my drawing is n't perfect but let 's assume all of these pieces are equal and i 'm hungry so let 's say that i eat i eat this piece , and i eat this piece so they essentially go away . so what fraction of the pieces have i eaten ?
how many pies did stephanie eat ?
- [ sal ] what i want to do in this video is think about the idea of a fraction . and for the sake of this video as we just learn what a fraction is , you can really think of it as a part of a whole . later on we 'll think of it in even more ways . what do i mean by a part of a whole ? so let 's imagine that we have a ...
only only cheese . and lets say on this fourth slice , i have cheese and , i do n't know , i have olives i have olives right over here . so we can ask ourselves , `` what fraction of this pizza has olives on it ? ''
can i know what types of fractions ?
- [ sal ] what i want to do in this video is think about the idea of a fraction . and for the sake of this video as we just learn what a fraction is , you can really think of it as a part of a whole . later on we 'll think of it in even more ways . what do i mean by a part of a whole ? so let 's imagine that we have a ...
so my drawing is n't perfect but let 's assume all of these pieces are equal and i 'm hungry so let 's say that i eat i eat this piece , and i eat this piece so they essentially go away . so what fraction of the pieces have i eaten ? well , i have a total of five pieces .
if the pieces are unequal in size , then would it still be a fraction ?
- [ sal ] what i want to do in this video is think about the idea of a fraction . and for the sake of this video as we just learn what a fraction is , you can really think of it as a part of a whole . later on we 'll think of it in even more ways . what do i mean by a part of a whole ? so let 's imagine that we have a ...
well this fraction has cheese , but it also has olives so we wo n't count that . then we have one , two , three , three fractions three of these equal pieces have only cheese so we could say three out of a total of four pieces of . .
how do you add fractions ?
- [ sal ] what i want to do in this video is think about the idea of a fraction . and for the sake of this video as we just learn what a fraction is , you can really think of it as a part of a whole . later on we 'll think of it in even more ways . what do i mean by a part of a whole ? so let 's imagine that we have a ...
well this fraction has cheese , but it also has olives so we wo n't count that . then we have one , two , three , three fractions three of these equal pieces have only cheese so we could say three out of a total of four pieces of . .
how do i recognize fractions on a number line ?
- [ sal ] what i want to do in this video is think about the idea of a fraction . and for the sake of this video as we just learn what a fraction is , you can really think of it as a part of a whole . later on we 'll think of it in even more ways . what do i mean by a part of a whole ? so let 's imagine that we have a ...
well this fraction has cheese , but it also has olives so we wo n't count that . then we have one , two , three , three fractions three of these equal pieces have only cheese so we could say three out of a total of four pieces of . .
why do fractions exist in math ?
- [ sal ] what i want to do in this video is think about the idea of a fraction . and for the sake of this video as we just learn what a fraction is , you can really think of it as a part of a whole . later on we 'll think of it in even more ways . what do i mean by a part of a whole ? so let 's imagine that we have a ...
only only cheese . and lets say on this fourth slice , i have cheese and , i do n't know , i have olives i have olives right over here . so we can ask ourselves , `` what fraction of this pizza has olives on it ? ''
when there is a word problem about fractions , how do you know what number to put on the top ?
- [ sal ] what i want to do in this video is think about the idea of a fraction . and for the sake of this video as we just learn what a fraction is , you can really think of it as a part of a whole . later on we 'll think of it in even more ways . what do i mean by a part of a whole ? so let 's imagine that we have a ...
now someone said , `` well what fraction of this pizza only has cheese ? `` . well this fraction has cheese , but it also has olives so we wo n't count that . then we have one , two , three , three fractions three of these equal pieces have only cheese so we could say three out of a total of four pieces of .
is n't the bottom number called a denominator ?
- [ sal ] what i want to do in this video is think about the idea of a fraction . and for the sake of this video as we just learn what a fraction is , you can really think of it as a part of a whole . later on we 'll think of it in even more ways . what do i mean by a part of a whole ? so let 's imagine that we have a ...
.is yellow ? '' `` what fraction of my fruit as drawn is yellow ? '' well , we could say , we have a total of one , two , three , four , five pieces of fruit so there 's a total of five pieces of fruit .
how to convert a fraction into a mixed fraction ?
- [ sal ] what i want to do in this video is think about the idea of a fraction . and for the sake of this video as we just learn what a fraction is , you can really think of it as a part of a whole . later on we 'll think of it in even more ways . what do i mean by a part of a whole ? so let 's imagine that we have a ...
well this fraction has cheese , but it also has olives so we wo n't count that . then we have one , two , three , three fractions three of these equal pieces have only cheese so we could say three out of a total of four pieces of . .
why do you do if your dividing fractions ?
- [ sal ] what i want to do in this video is think about the idea of a fraction . and for the sake of this video as we just learn what a fraction is , you can really think of it as a part of a whole . later on we 'll think of it in even more ways . what do i mean by a part of a whole ? so let 's imagine that we have a ...
- [ sal ] what i want to do in this video is think about the idea of a fraction . and for the sake of this video as we just learn what a fraction is , you can really think of it as a part of a whole .
what is the new price ?
- [ sal ] what i want to do in this video is think about the idea of a fraction . and for the sake of this video as we just learn what a fraction is , you can really think of it as a part of a whole . later on we 'll think of it in even more ways . what do i mean by a part of a whole ? so let 's imagine that we have a ...
.is yellow ? '' `` what fraction of my fruit as drawn is yellow ? '' well , we could say , we have a total of one , two , three , four , five pieces of fruit so there 's a total of five pieces of fruit .
if a fraction is something like 1 1/4 , what is is called , and what is the whole number called when in a fraction ?
- [ sal ] what i want to do in this video is think about the idea of a fraction . and for the sake of this video as we just learn what a fraction is , you can really think of it as a part of a whole . later on we 'll think of it in even more ways . what do i mean by a part of a whole ? so let 's imagine that we have a ...
.is yellow ? '' `` what fraction of my fruit as drawn is yellow ? '' well , we could say , we have a total of one , two , three , four , five pieces of fruit so there 's a total of five pieces of fruit .
what is difference between fraction and division ?
- [ sal ] what i want to do in this video is think about the idea of a fraction . and for the sake of this video as we just learn what a fraction is , you can really think of it as a part of a whole . later on we 'll think of it in even more ways . what do i mean by a part of a whole ? so let 's imagine that we have a ...
- [ sal ] what i want to do in this video is think about the idea of a fraction . and for the sake of this video as we just learn what a fraction is , you can really think of it as a part of a whole .
so is the denominator at the bottom and the numerator at the top ?
- [ sal ] what i want to do in this video is think about the idea of a fraction . and for the sake of this video as we just learn what a fraction is , you can really think of it as a part of a whole . later on we 'll think of it in even more ways . what do i mean by a part of a whole ? so let 's imagine that we have a ...
well this fraction has cheese , but it also has olives so we wo n't count that . then we have one , two , three , three fractions three of these equal pieces have only cheese so we could say three out of a total of four pieces of . .
how do you do fractions without the pictures ?
- [ sal ] what i want to do in this video is think about the idea of a fraction . and for the sake of this video as we just learn what a fraction is , you can really think of it as a part of a whole . later on we 'll think of it in even more ways . what do i mean by a part of a whole ? so let 's imagine that we have a ...
well this fraction has cheese , but it also has olives so we wo n't count that . then we have one , two , three , three fractions three of these equal pieces have only cheese so we could say three out of a total of four pieces of . .
can all fractions are expressed as percentages ?
- [ sal ] what i want to do in this video is think about the idea of a fraction . and for the sake of this video as we just learn what a fraction is , you can really think of it as a part of a whole . later on we 'll think of it in even more ways . what do i mean by a part of a whole ? so let 's imagine that we have a ...
- [ sal ] what i want to do in this video is think about the idea of a fraction . and for the sake of this video as we just learn what a fraction is , you can really think of it as a part of a whole .
who was first credited for inventing the idea of fractions ?
- [ sal ] what i want to do in this video is think about the idea of a fraction . and for the sake of this video as we just learn what a fraction is , you can really think of it as a part of a whole . later on we 'll think of it in even more ways . what do i mean by a part of a whole ? so let 's imagine that we have a ...
just like that . and let me divide it into let me divide it into 5 equal pieces 1 one , two , three , four that does n't look too equal . so the whole point is to do it equal , one , two , three , four that looks pretty close .
should fractions such as 4/3 or 2/5 be described grammatically using singular forms ?
- [ sal ] what i want to do in this video is think about the idea of a fraction . and for the sake of this video as we just learn what a fraction is , you can really think of it as a part of a whole . later on we 'll think of it in even more ways . what do i mean by a part of a whole ? so let 's imagine that we have a ...
.is yellow ? '' `` what fraction of my fruit as drawn is yellow ? '' well , we could say , we have a total of one , two , three , four , five pieces of fruit so there 's a total of five pieces of fruit .
what is the rule for adding a fraction ?
- [ sal ] what i want to do in this video is think about the idea of a fraction . and for the sake of this video as we just learn what a fraction is , you can really think of it as a part of a whole . later on we 'll think of it in even more ways . what do i mean by a part of a whole ? so let 's imagine that we have a ...
well this fraction has cheese , but it also has olives so we wo n't count that . then we have one , two , three , three fractions three of these equal pieces have only cheese so we could say three out of a total of four pieces of . .
when were fractions first used in the world of math ?
- [ sal ] what i want to do in this video is think about the idea of a fraction . and for the sake of this video as we just learn what a fraction is , you can really think of it as a part of a whole . later on we 'll think of it in even more ways . what do i mean by a part of a whole ? so let 's imagine that we have a ...
.is yellow ? '' `` what fraction of my fruit as drawn is yellow ? '' well , we could say , we have a total of one , two , three , four , five pieces of fruit so there 's a total of five pieces of fruit .
how do you divide a fraction is it just the opposite of multiplying ?
- [ sal ] what i want to do in this video is think about the idea of a fraction . and for the sake of this video as we just learn what a fraction is , you can really think of it as a part of a whole . later on we 'll think of it in even more ways . what do i mean by a part of a whole ? so let 's imagine that we have a ...
actually i 'll draw an apple . it 's a little bit of a strange color for an apple , but we 'll go with it . so that is my apple right over there , and actually let me draw one more , let me draw a grape .
how far does the prersent go ?
- [ sal ] what i want to do in this video is think about the idea of a fraction . and for the sake of this video as we just learn what a fraction is , you can really think of it as a part of a whole . later on we 'll think of it in even more ways . what do i mean by a part of a whole ? so let 's imagine that we have a ...
so let 's assume that these are equal pieces . so my drawing is n't perfect but let 's assume all of these pieces are equal and i 'm hungry so let 's say that i eat i eat this piece , and i eat this piece so they essentially go away . so what fraction of the pieces have i eaten ?
how long is each piece ?
- [ sal ] what i want to do in this video is think about the idea of a fraction . and for the sake of this video as we just learn what a fraction is , you can really think of it as a part of a whole . later on we 'll think of it in even more ways . what do i mean by a part of a whole ? so let 's imagine that we have a ...
.is yellow ? '' `` what fraction of my fruit as drawn is yellow ? '' well , we could say , we have a total of one , two , three , four , five pieces of fruit so there 's a total of five pieces of fruit .
why not ask : `` what fraction of my fruit is blue '' ?
- [ sal ] what i want to do in this video is think about the idea of a fraction . and for the sake of this video as we just learn what a fraction is , you can really think of it as a part of a whole . later on we 'll think of it in even more ways . what do i mean by a part of a whole ? so let 's imagine that we have a ...
.is yellow ? '' `` what fraction of my fruit as drawn is yellow ? '' well , we could say , we have a total of one , two , three , four , five pieces of fruit so there 's a total of five pieces of fruit .
how to evaluate a fraction ?
- [ sal ] what i want to do in this video is think about the idea of a fraction . and for the sake of this video as we just learn what a fraction is , you can really think of it as a part of a whole . later on we 'll think of it in even more ways . what do i mean by a part of a whole ? so let 's imagine that we have a ...
only only cheese . and lets say on this fourth slice , i have cheese and , i do n't know , i have olives i have olives right over here . so we can ask ourselves , `` what fraction of this pizza has olives on it ? ''
do know the difference of fractions , ratio , rational numbers , and ordered pairs ?
( piano music ) man : pleasure often comes with a cost , with a little pain . lucas cranach the elder reminds us of us of that in his painting , cupid complaining to venus . woman : we see cupid who has reached for a honeycomb only to be stung by a whole set of bees . he 's looking up at venus his mother in pain as tho...
instead , she is looking out at us as a sultry seducer . woman : there is no denying the eroticism of this painting , of her body , of her look toward us , the way that she positions her legs between that branch , the way that she reaches up toward the apples on the tree , reminding us of eve and the garden of eden . m...
what is the fruit on the tree ?
( piano music ) man : pleasure often comes with a cost , with a little pain . lucas cranach the elder reminds us of us of that in his painting , cupid complaining to venus . woman : we see cupid who has reached for a honeycomb only to be stung by a whole set of bees . he 's looking up at venus his mother in pain as tho...
you have on the one hand this reference back to antiquity . you have venus the goddess of love and beauty . you have her son cupid .
is that any possibility that this painting was made for a particular collection , being this woman a real lady as if she was `` like a venus '' or `` the venus herself '' instead of a real venus dressed up like an ideal saxon lady ?
alright we have a graph of y is equal to f of x and we wan na figure out what is the limit of f of x as x approaches negative three . and if we just look at x equals negative three , it 's really hard to see at least based on how this graph looks , how what f of negative three is and if anything , it looks like we hav...
alright we have a graph of y is equal to f of x and we wan na figure out what is the limit of f of x as x approaches negative three . and if we just look at x equals negative three , it 's really hard to see at least based on how this graph looks , how what f of negative three is and if anything , it looks like we hav...
is this also true in a f ( x ) = 1/x graph where when x is decreasing/increasing to 0 , the graph approaches closer to infinity ?
alright we have a graph of y is equal to f of x and we wan na figure out what is the limit of f of x as x approaches negative three . and if we just look at x equals negative three , it 's really hard to see at least based on how this graph looks , how what f of negative three is and if anything , it looks like we hav...
and if we just look at x equals negative three , it 's really hard to see at least based on how this graph looks , how what f of negative three is and if anything , it looks like we have an asymptotic discontinuity here . it looks like on the left side of x equals negative three , it looks like we are approaching , i g...
i thought infinity is a concept , not a number ?
alright we have a graph of y is equal to f of x and we wan na figure out what is the limit of f of x as x approaches negative three . and if we just look at x equals negative three , it 's really hard to see at least based on how this graph looks , how what f of negative three is and if anything , it looks like we hav...
alright we have a graph of y is equal to f of x and we wan na figure out what is the limit of f of x as x approaches negative three . and if we just look at x equals negative three , it 's really hard to see at least based on how this graph looks , how what f of negative three is and if anything , it looks like we hav...
in the graph , how to draw the line , do you draw it based on the information or make some random lines ?
alright we have a graph of y is equal to f of x and we wan na figure out what is the limit of f of x as x approaches negative three . and if we just look at x equals negative three , it 's really hard to see at least based on how this graph looks , how what f of negative three is and if anything , it looks like we hav...
f of negative , if we continued with this trend and if we were to asymptote towards this line right over here , this vertical asymptote , it looks like as we get closer and closer to negative three that the value of the function at that point is approaching , is getting closer and closer to infinity , at least that 's ...
would n't saying that the limit is infinity be treating infinity as a numerical value , which , by definition , is not a numerical value ?
alright we have a graph of y is equal to f of x and we wan na figure out what is the limit of f of x as x approaches negative three . and if we just look at x equals negative three , it 's really hard to see at least based on how this graph looks , how what f of negative three is and if anything , it looks like we hav...
f of negative three is off the charts . f of negative , if we continued with this trend and if we were to asymptote towards this line right over here , this vertical asymptote , it looks like as we get closer and closer to negative three that the value of the function at that point is approaching , is getting closer an...
what is the actual definition of asymptote ?
alright we have a graph of y is equal to f of x and we wan na figure out what is the limit of f of x as x approaches negative three . and if we just look at x equals negative three , it 's really hard to see at least based on how this graph looks , how what f of negative three is and if anything , it looks like we hav...
f of negative , if we continued with this trend and if we were to asymptote towards this line right over here , this vertical asymptote , it looks like as we get closer and closer to negative three that the value of the function at that point is approaching , is getting closer and closer to infinity , at least that 's ...
why does ap calculus exist ?
alright we have a graph of y is equal to f of x and we wan na figure out what is the limit of f of x as x approaches negative three . and if we just look at x equals negative three , it 's really hard to see at least based on how this graph looks , how what f of negative three is and if anything , it looks like we hav...
f of negative , if we continued with this trend and if we were to asymptote towards this line right over here , this vertical asymptote , it looks like as we get closer and closer to negative three that the value of the function at that point is approaching , is getting closer and closer to infinity , at least that 's ...
so is it right to say that , when we have no point in y axis for a given value of x the limit does n't exist ?
alright we have a graph of y is equal to f of x and we wan na figure out what is the limit of f of x as x approaches negative three . and if we just look at x equals negative three , it 's really hard to see at least based on how this graph looks , how what f of negative three is and if anything , it looks like we hav...
alright we have a graph of y is equal to f of x and we wan na figure out what is the limit of f of x as x approaches negative three . and if we just look at x equals negative three , it 's really hard to see at least based on how this graph looks , how what f of negative three is and if anything , it looks like we hav...
if the two sides of x are approaching -3 , why the limit is not -3 ?
( jazz music ) dr. zucker : we 're in the large complex that is the convent of san marco in florence and we 're standing in one of the cloisters . it 's a beautiful space with frescoes and all of the lunettes and a large fresco by fra angelico of the crucifixion . the monastery itself is dominican and that is one of th...
it really feels as though mary and the angel gabriel are in a space very much like the one that the monks themselves inhabited , which must have helped them to think about this moment of the annunciation . dr. zucker : this is the annunciation . our archangel gabriel has appeared to mary to announce to her that she 'll...
what is the line that sort of frames the ceiling of the room of the annunciation ?
( jazz music ) dr. zucker : we 're in the large complex that is the convent of san marco in florence and we 're standing in one of the cloisters . it 's a beautiful space with frescoes and all of the lunettes and a large fresco by fra angelico of the crucifixion . the monastery itself is dominican and that is one of th...
it 's a beautiful space with frescoes and all of the lunettes and a large fresco by fra angelico of the crucifixion . the monastery itself is dominican and that is one of the begging orders . this is a space where people would have given up their worldly possessions and traded them in for a life of prayer and solitude ...
do monastery 's still function ?
( jazz music ) dr. zucker : we 're in the large complex that is the convent of san marco in florence and we 're standing in one of the cloisters . it 's a beautiful space with frescoes and all of the lunettes and a large fresco by fra angelico of the crucifixion . the monastery itself is dominican and that is one of th...
the monastery itself is dominican and that is one of the begging orders . this is a space where people would have given up their worldly possessions and traded them in for a life of prayer and solitude . dr. harris : it 's a famous place , largely because this is where fra angelico spent most of his life and where he p...
are there still monastic groups and men that give up all physical possessions to devote a life to prayer ?
( jazz music ) dr. zucker : we 're in the large complex that is the convent of san marco in florence and we 're standing in one of the cloisters . it 's a beautiful space with frescoes and all of the lunettes and a large fresco by fra angelico of the crucifixion . the monastery itself is dominican and that is one of th...
dr. harris : about every ten or so feet , there 's an opening with a small wooden door into a small cell that would 've been a space for a monk to sleep , but also a place for prayer and meditation . on the walls are frescoes by fra angelico and his followers . dr. zucker : this must be freezing in the winter .
what was the function of fra angelico 's anmunciation ?
( jazz music ) dr. zucker : we 're in the large complex that is the convent of san marco in florence and we 're standing in one of the cloisters . it 's a beautiful space with frescoes and all of the lunettes and a large fresco by fra angelico of the crucifixion . the monastery itself is dominican and that is one of th...
there are areas where the artist allows himself to really create a very decorative set of forms . for instance , look at gabriel 's wings . not only are they just beautifully detailed , but if you look really carefully , and this is something that does n't come across in photographs , he must have used a kind of mica o...
why are angels in renaissance art sometimes painted with multicolored wings ?
( jazz music ) dr. zucker : we 're in the large complex that is the convent of san marco in florence and we 're standing in one of the cloisters . it 's a beautiful space with frescoes and all of the lunettes and a large fresco by fra angelico of the crucifixion . the monastery itself is dominican and that is one of th...
( jazz music ) dr. zucker : we 're in the large complex that is the convent of san marco in florence and we 're standing in one of the cloisters . it 's a beautiful space with frescoes and all of the lunettes and a large fresco by fra angelico of the crucifixion .
do the colours of the wing have a meaning ?
( jazz music ) dr. zucker : we 're in the large complex that is the convent of san marco in florence and we 're standing in one of the cloisters . it 's a beautiful space with frescoes and all of the lunettes and a large fresco by fra angelico of the crucifixion . the monastery itself is dominican and that is one of th...
( jazz music ) dr. zucker : we 're in the large complex that is the convent of san marco in florence and we 're standing in one of the cloisters . it 's a beautiful space with frescoes and all of the lunettes and a large fresco by fra angelico of the crucifixion .
when was the building erected ?
( jazz music ) dr. zucker : we 're in the large complex that is the convent of san marco in florence and we 're standing in one of the cloisters . it 's a beautiful space with frescoes and all of the lunettes and a large fresco by fra angelico of the crucifixion . the monastery itself is dominican and that is one of th...
dr. harris : in fact , cosimo di ' medici had a cell of his own that he used on occasion . dr. zucker : when we get to the top of the stairs , we can see down two long hallways . dr. harris : about every ten or so feet , there 's an opening with a small wooden door into a small cell that would 've been a space for a mo...
what is the relationship between the two saints in this picture ?
( jazz music ) dr. zucker : we 're in the large complex that is the convent of san marco in florence and we 're standing in one of the cloisters . it 's a beautiful space with frescoes and all of the lunettes and a large fresco by fra angelico of the crucifixion . the monastery itself is dominican and that is one of th...
it 's a beautiful space with frescoes and all of the lunettes and a large fresco by fra angelico of the crucifixion . the monastery itself is dominican and that is one of the begging orders . this is a space where people would have given up their worldly possessions and traded them in for a life of prayer and solitude ...
what do the doors in the monastery have to do with anything ?
we 're in the british museum , and we 're looking at one of the caryatids from the erechtheion from the acropolis in athens . that 's a lot of information . and a caryatid is a human figure acting as a column . she looks like a column . she does , her drapery falls in what almost looks like the fluting of a column , th...
and here it 's taken to the most literal , extreme . and within the same room is the fabulous ionic column , also from the erechtheion , which is very graceful , and grows more slender as it rises towards the top , with the lovely ionic capital , with decorative carving underneath . but having this column here is a rea...
were columns ( ionic , doric , caryatids ) also painted ?
we 're in the british museum , and we 're looking at one of the caryatids from the erechtheion from the acropolis in athens . that 's a lot of information . and a caryatid is a human figure acting as a column . she looks like a column . she does , her drapery falls in what almost looks like the fluting of a column , th...
it 's interesting because we 're talking about the sway of the body , but by the time you get up to the capital , up to her head , she 's straightened out , and she has to be . you know , you can really get a sense of even the specificity , the weight , the thickness of the cloth . you know , the way a peplos worked , ...
if so , any sense of the color schemes ?
we 're in the british museum , and we 're looking at one of the caryatids from the erechtheion from the acropolis in athens . that 's a lot of information . and a caryatid is a human figure acting as a column . she looks like a column . she does , her drapery falls in what almost looks like the fluting of a column , th...
we 're in the british museum , and we 're looking at one of the caryatids from the erechtheion from the acropolis in athens . that 's a lot of information .
could someone enlighten me on what exactly were the artists/architects were thinking when they were creating these works ?
we 're in the british museum , and we 're looking at one of the caryatids from the erechtheion from the acropolis in athens . that 's a lot of information . and a caryatid is a human figure acting as a column . she looks like a column . she does , her drapery falls in what almost looks like the fluting of a column , th...
right , more elegant , more graceful , more decorative . and , of course , the female figures are replacing the actual columns , so this is kind of the synthesis of those two . and the lovely fluting that makes this wonderful play of light and dark across the column .
why do you think the caryatids are female figures ?
we 're in the british museum , and we 're looking at one of the caryatids from the erechtheion from the acropolis in athens . that 's a lot of information . and a caryatid is a human figure acting as a column . she looks like a column . she does , her drapery falls in what almost looks like the fluting of a column , th...
right , that tunic that she 's wearing , and that pools down around her waist , falling from her breasts in a very graceful way . it 's interesting because we 're talking about the sway of the body , but by the time you get up to the capital , up to her head , she 's straightened out , and she has to be . you know , yo...
at the time they were sculpted , what was the status of women in the greek culture ?
we 're in the british museum , and we 're looking at one of the caryatids from the erechtheion from the acropolis in athens . that 's a lot of information . and a caryatid is a human figure acting as a column . she looks like a column . she does , her drapery falls in what almost looks like the fluting of a column , th...
she does , her drapery falls in what almost looks like the fluting of a column , those vertical ridges . and because she stands in contrapposto with one weight bearing leg , which is the one that looks like a column , and one free leg so that the knee juts forward that drapery is allowed to fall completely free of the ...
was there usually one artist/sculpture that created these sculptures , or a bunch of different artist ?
we 're in the british museum , and we 're looking at one of the caryatids from the erechtheion from the acropolis in athens . that 's a lot of information . and a caryatid is a human figure acting as a column . she looks like a column . she does , her drapery falls in what almost looks like the fluting of a column , th...
kind of weight to it . it 's interesting , if you look at the porch where this came from , there are six caryatids altogether , four facing forward , and the two on the right oppose the two on the left in terms of the contraposto , i believe with the weight-bearing leg on the outside always to make it feel more stable ...
how long did a sculpture take to make ?
we 're in the british museum , and we 're looking at one of the caryatids from the erechtheion from the acropolis in athens . that 's a lot of information . and a caryatid is a human figure acting as a column . she looks like a column . she does , her drapery falls in what almost looks like the fluting of a column , th...
you know , the way a peplos worked , it was pinned at the shoulders , but you can really get a sense that this is not a very thin fabric , it 's got a certain heaviness to it . kind of weight to it . it 's interesting , if you look at the porch where this came from , there are six caryatids altogether , four facing for...
what material would a peplos be made of to create that weight ?
we 're in the british museum , and we 're looking at one of the caryatids from the erechtheion from the acropolis in athens . that 's a lot of information . and a caryatid is a human figure acting as a column . she looks like a column . she does , her drapery falls in what almost looks like the fluting of a column , th...
and a caryatid is a human figure acting as a column . she looks like a column . she does , her drapery falls in what almost looks like the fluting of a column , those vertical ridges .
where those caryatids also painted like the pathenon sculptures ?
now we 're gon na discuss the second of two popular ways to analyze circuits , and this one is called the mesh current method . this is actually one of my favorite . there 's a fun spot here where we make up currents flowing around in circles inside the circuit , and it 's interesting . in the mesh current method , wh...
let 's look a little closely . it 's pretty clear that the current flowing through our voltage source , v , is equal to mesh current i1 . and also , when we get up here to r1 , mesh current i1 is flowing through r1 in this direction here .
is it possible to eliminate current source from the circuit by converting it to voltage source or vice-versa ?
now we 're gon na discuss the second of two popular ways to analyze circuits , and this one is called the mesh current method . this is actually one of my favorite . there 's a fun spot here where we make up currents flowing around in circles inside the circuit , and it 's interesting . in the mesh current method , wh...
when we say an easy one , here 's an example of an easy one . the current source i , right here , defines what i3 is . so i3 is an example of an easy current to solve for .
instead of having i3 going clockwise and equaling - ( current soruce ) , could you have made i3 go counter-clockwise and equal + ( current source ) ?
now we 're gon na discuss the second of two popular ways to analyze circuits , and this one is called the mesh current method . this is actually one of my favorite . there 's a fun spot here where we make up currents flowing around in circles inside the circuit , and it 's interesting . in the mesh current method , wh...
so the first thing we come to is a voltage rise . we go in the minus side and out the plus . that 's a voltage rise of v volts .
how to determine the plus-negative side of the resistor ?
now we 're gon na discuss the second of two popular ways to analyze circuits , and this one is called the mesh current method . this is actually one of my favorite . there 's a fun spot here where we make up currents flowing around in circles inside the circuit , and it 's interesting . in the mesh current method , wh...
let 's look a little closely . it 's pretty clear that the current flowing through our voltage source , v , is equal to mesh current i1 . and also , when we get up here to r1 , mesh current i1 is flowing through r1 in this direction here .
isnt the current source suppose to be of infinite resistance , hence there would be an break in that branch of the circuit ?
now we 're gon na discuss the second of two popular ways to analyze circuits , and this one is called the mesh current method . this is actually one of my favorite . there 's a fun spot here where we make up currents flowing around in circles inside the circuit , and it 's interesting . in the mesh current method , wh...
and then the third step in the method is to write kirchhoff 's voltage law . kvl . write kirchoff 's voltage law equations , for the two remaining mesh currents .
after applying kvl for mesh-2 , why are we not applying kvl for mesh-3 ?
now we 're gon na discuss the second of two popular ways to analyze circuits , and this one is called the mesh current method . this is actually one of my favorite . there 's a fun spot here where we make up currents flowing around in circles inside the circuit , and it 's interesting . in the mesh current method , wh...
so it 's gon na have a value of r2 times this value here . i1 minus i2 . and now we 've made it all the way back to home , to where we started from , and so that 's our kvl equation , which we set equal to zero .
why is r2 ( i2-i1 ) defined as positive while r3i3 and r4 ( i2-i3 ) as negative on on the other hand , why is r1i1 and r2i2 is negative ?
these are the parts you 're going to need to build your spout bot . we 've got lead free solder here . this is going to be used to make metal connections and conduct electricity and hold our circuit together . we 've got some hot glue . that 's a hot glue stick . we 'll use that to hold the parts together that do n't n...
we have two resistors here . these are 41 ohm resistors . you can use anywhere from around 40 to 200 ohms .
what does `` ohm '' measure , and where did it come from ?
these are the parts you 're going to need to build your spout bot . we 've got lead free solder here . this is going to be used to make metal connections and conduct electricity and hold our circuit together . we 've got some hot glue . that 's a hot glue stick . we 'll use that to hold the parts together that do n't n...
and basically , we chose those colors because they 're going to show up better in the video when we put them on top of our battery holder . and this is our double a battery holder . so those are the parts that you 're going to need to build the spout bot .
does the type of battery matter or does it have to be specific ?
these are the parts you 're going to need to build your spout bot . we 've got lead free solder here . this is going to be used to make metal connections and conduct electricity and hold our circuit together . we 've got some hot glue . that 's a hot glue stick . we 'll use that to hold the parts together that do n't n...
and together in series , they are three volts . then we have two bottle caps from water bottles , some shrink wrap tubing . this comes in a lot of different sizes and colors .
why do you need a bottle cap to make a robot ?
these are the parts you 're going to need to build your spout bot . we 've got lead free solder here . this is going to be used to make metal connections and conduct electricity and hold our circuit together . we 've got some hot glue . that 's a hot glue stick . we 'll use that to hold the parts together that do n't n...
you can use anywhere from around 40 to 200 ohms . it kind of depends on how bright you want your leds to be and what types of leds you choose . we 've got our leds here . these are two water clear blue leds and four paper clips .
for resisters would the higher the ams the less voltage goes to the leds or vise versa ?
these are the parts you 're going to need to build your spout bot . we 've got lead free solder here . this is going to be used to make metal connections and conduct electricity and hold our circuit together . we 've got some hot glue . that 's a hot glue stick . we 'll use that to hold the parts together that do n't n...
these are the parts you 're going to need to build your spout bot . we 've got lead free solder here .
what is the profession called where a person designs a robot or a rover which takes on space exploration missions ?
these are the parts you 're going to need to build your spout bot . we 've got lead free solder here . this is going to be used to make metal connections and conduct electricity and hold our circuit together . we 've got some hot glue . that 's a hot glue stick . we 'll use that to hold the parts together that do n't n...
these are the parts you 're going to need to build your spout bot . we 've got lead free solder here .
do you need led lights ?
these are the parts you 're going to need to build your spout bot . we 've got lead free solder here . this is going to be used to make metal connections and conduct electricity and hold our circuit together . we 've got some hot glue . that 's a hot glue stick . we 'll use that to hold the parts together that do n't n...
these are the parts you 're going to need to build your spout bot . we 've got lead free solder here .
where can i find the things to make the bot ?
these are the parts you 're going to need to build your spout bot . we 've got lead free solder here . this is going to be used to make metal connections and conduct electricity and hold our circuit together . we 've got some hot glue . that 's a hot glue stick . we 'll use that to hold the parts together that do n't n...
these are the parts you 're going to need to build your spout bot . we 've got lead free solder here .
or can you just buy a package to make the spout bot ?
one of the most fundamental ideas in all of physics is the idea of work . now when you first learn work , you just say , oh , that 's just force times distance . but then later on , when you learn a little bit about vectors , you realize that the force is n't always going in the same direction as your displacement . so...
that was the magnitude of my force vector , so it 's the magnitude of my force vector , times the cosine of this angle . so you know , let 's call that theta . let 's say it a little generally .
is physics helpful to know before doing calculus ?
one of the most fundamental ideas in all of physics is the idea of work . now when you first learn work , you just say , oh , that 's just force times distance . but then later on , when you learn a little bit about vectors , you realize that the force is n't always going in the same direction as your displacement . so...
we want to sum up all of the drs to figure out the total , all of the f dot drs to figure out the total work done . and that 's where the integral comes in . we will do a line integral over -- i mean , you could think of it two ways . you could write just d dot w there , but we could say , we 'll do a line integral alo...
what exactly is a line integral ?
one of the most fundamental ideas in all of physics is the idea of work . now when you first learn work , you just say , oh , that 's just force times distance . but then later on , when you learn a little bit about vectors , you realize that the force is n't always going in the same direction as your displacement . so...
let 's define a vector field . so let 's say that i have a vector field f , and we 're going to think about what this means in a second . it 's a function of x and y , and it 's equal to some scalar function of x and y times the i-unit vector , or the horizontal unit vector , plus some other function , scalar function ...
can someone shed a little light on the relationships and differences between : 1 ) a vector valued function f ( x , y , z ) = u ( x , y , z ) i+v ( x , y , z ) j+w ( x , y , z ) k [ i ca n't think of an example ] 2 ) a vector function , f ( r ) = f ( < x , y , z > ) = < f ( x ) , f ( y ) , f ( z ) > 3 ) a scalar functi...
one of the most fundamental ideas in all of physics is the idea of work . now when you first learn work , you just say , oh , that 's just force times distance . but then later on , when you learn a little bit about vectors , you realize that the force is n't always going in the same direction as your displacement . so...
but i think you get the idea . it associates a vector with every point on x-y plane . now , this is called a vector field , so it probably makes a lot of sense that this could be used to describe any type of field .
[ temperature at every point in a room ] 6 ) a vector field ?