Datasets:
NationalTutoringObservatory
/
MathEd-PII

Dataset card Data Studio Files
xet
 Community
1
role
stringclasses
2 values
content
stringlengths
0
2.1k
session_id
int64
10
21.7k
sequence_id
int64
0
2.38k
annotations
listlengths
0
8
volunteer
what do you want to work on?
19,061
2
[]
student
my homework
19,061
3
[]
volunteer
okay
19,061
4
[]
volunteer
let's get started
19,061
5
[]
student
pk
19,061
6
[]
student
ok
19,061
7
[]
student
my question says what perimater of the square is shown
19,061
8
[]
student
let me draw it
19,061
9
[]
volunteer
so the question basically asked calculate the perimeter right?
19,061
10
[]
student
ya
19,061
11
[]
volunteer
okay so since you know in a square that all four sides are 9
19,061
12
[]
volunteer
then what do you think it means for the calculation of the perimeter? (I know what it is)
19,061
13
[]
student
18
19,061
14
[]
volunteer
Not quite perimeter means you have to add up all the sides
19,061
15
[]
volunteer
so it's 9+9+9+9
19,061
16
[]
volunteer
back yet?
19,061
17
[]
student
hello
19,061
18
[]
volunteer
hi
19,061
19
[]
student
I'm back uh connection error
19,061
20
[]
volunteer
OH so back to work
19,061
21
[]
volunteer
so the perimeter you have to add up all the sides
19,061
22
[]
volunteer
which is 9+9+9+9
19,061
23
[]
volunteer
so what do you get?
19,061
24
[]
student
33
19,061
25
[]
volunteer
it's 36
19,061
26
[]
volunteer
show me your process
19,061
27
[]
student
I need help solving this, but as of now I will be right back for a few mins!
19,018
0
[]
student
i'm back
19,018
1
[]
student
i need help with c
19,018
2
[]
volunteer
ok
19,018
3
[]
volunteer
this is just asking what the change in the y is for moving over one space on the x axis
19,018
4
[]
volunteer
you can simply count it on the graph
19,018
5
[]
student
$2?
19,018
6
[]
volunteer
not quite
19,018
7
[]
student
Uhh idk then
19,018
8
[]
student
how do you find that like can you use he pencil to draw where u look at
19,018
9
[]
volunteer
it is actaully best to use the formula since they gave it to you
19,018
10
[]
student
yeah i looked at years which is the x axis
19,018
11
[]
student
and went to one year on it
19,018
12
[]
student
is it 10 dollars?
19,018
13
[]
student
per hour?
19,018
14
[]
volunteer
find y for a year and then find y for the following year and find the difference
19,018
15
[]
student
ohhhh
19,018
16
[]
student
nvm i see what u did
19,018
17
[]
student
its 0.92
19,018
18
[]
volunteer
yes exactly
19,018
19
[]
student
let me screenshot this to save
19,018
20
[]
volunteer
let me finish writing it
19,018
21
[]
volunteer
so you have the full process
19,018
22
[]
student
are my answers correct so far
19,018
23
[]
volunteer
a is correct
19,018
24
[]
volunteer
c is correct
19,018
25
[]
student
what about B?
19,018
26
[]
volunteer
yes that is correct
19,018
27
[]
student
Mark
19,018
28
[ { "pii_type": "PERSON", "surrogate": "Mark", "start": 0, "end": 4 } ]
student
can you check my answers
19,018
29
[]
student
nvm ik that its right but I do need help with this, this is new to me as well but its kinda like the same concept with the graph
19,018
30
[]
volunteer
Hi Alice
19,032
0
[ { "pii_type": "PERSON", "surrogate": "Alice", "start": 3, "end": 8 } ]
student
can you help me
19,032
1
[]
volunteer
I'm reading...
19,032
2
[]
volunteer
Can you give me 4 minutes to solve, and then I'll explain?
19,032
3
[]
student
Alice
19,032
4
[ { "pii_type": "PERSON", "surrogate": "Alice", "start": 0, "end": 5 } ]
volunteer
Did you learn what "cot" represents?
19,032
5
[]
student
sin/cos
19,032
6
[]
volunteer
That would be "tan". "Cot" is cos/sin.
19,032
7
[]
volunteer
I'll write that on the board.
19,032
8
[]
student
ohhh
19,032
9
[]
student
ok
19,032
10
[]
volunteer
This is not an indeterminate form (0/0). So the solution is not difficult. What is cos(π) = ?
19,032
11
[]
student
0?
19,032
12
[]
volunteer
Are you sure? Can you check with your calculator? Make sure to set your calculator mode to "radians".
19,032
13
[]
student
1
19,032
14
[]
student
im not sure
19,032
15
[]
volunteer
If you don't have a calculator with you, you can use this online calculator: www.mathcalculator.com
19,032
16
[ { "pii_type": "URL", "surrogate": "www.mathcalculator.com", "start": 77, "end": 99 } ]
volunteer
Type cos(pi) and click on the "RAD" button.
19,032
17
[]
student
-1
19,032
18
[]
volunteer
Awesome. That's correct.
19,032
19
[]
volunteer
What about sin(π) = ?
19,032
20
[]
student
0
19,032
21
[]
volunteer
Right. So we can simplify the limit a bit.
19,032
22
[]
student
ok
19,032
23
[]
volunteer
(x - π)) → 0 as x → π.
19,032
24
[]
volunteer
The denominator goes to zero, so the limit is -∞.
19,032
25
[]
volunteer
I don't know if your software will let you enter -∞. Some teacher would write this as DNE. It depends on your teacher.
19,032
26
[]
student
OKKK
19,032
27
[]
student
will you help me with this one
19,032
28
[]
volunteer
OK. The first step is to factor the numerator. It's a difference of two squares, like a^2 - b^2. Can you factor x^2 - 9 ?
19,032
29
[]
student
(x-3)(x+3)
19,032
30
[]
volunteer
Correct.
19,032
31
[]
volunteer
Now let's look at the denominator. For what value of x is x+3 = 0 ?
19,032
32
[]
student
um
19,032
33
[]
student
-3
19,032
34
[]
volunteer
Yes. If x = -3, then the denominator is zero. But because we're not allowed to divide by zero, f(x) is undefined, and "discontinuous" at x= -3.
19,032
35
[]
volunteer
That's why you see the open (white) circle at x = -3 on the graph.
19,032
36
[]
volunteer
This is called a "hole" or "removable discontinuity".
19,032
37
[]
student
yes
19,032
38
[]
volunteer
That's all the time I have. Any quick question before I go?
19,032
39
[]
volunteer
Looks like you're away. I'll end the session to help others. You can always make another request.
19,032
40
[]
volunteer
Hello Marcus, How are you doing today?
19,063
0
[ { "pii_type": "PERSON", "surrogate": "Marcus", "start": 6, "end": 12 } ]
student
hi i'm doing good
19,063
1
[]