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21 | Video:How to Write a Scientific Method Worksheet for Elementary Schoolwith Milo De Prieto
The scientific method is a great critical thinking tool in the classroom. Learn how to create and implement a scientific method worksheet for an elementary class in this how-to video from About.com.See Transcript
Transcript:How to... | http://video.about.com/k6educators/How-to-Write-a-Scientific-Method-Worksheet-for-Elementary-School.htm | 13 |
48 | From earliest times, astronomers assumed that the orbits in which the planets moved were circular; yet the numerous catalogs of measurements compiled especially during the 16th cent. did not fit this theory. At the beginning of the 17th cent., Johannes Kepler stated three laws of planetary motion that explained the obs... | http://www.reference.com/browse/Orbit | 13 |
10 | Feb. 20, 2003 Images from the visible light camera on NASA's Mars Odyssey spacecraft, combined with images from NASA's Mars Global Surveyor, suggest melting snow is the likely cause of the numerous eroded gullies first documented on Mars in 2000 by Global Surveyor.
The now-famous martian gullies were created by trickli... | http://www.sciencedaily.com/releases/2003/02/030220082349.htm | 13 |
81 | Square kilometre array
Understanding the evolution of the Universe, galaxies and stars requires looking back in time as far as possible. But the radiation from distant objects is incredibly weak and its detection needs huge collecting areas. Increasing sensitivity provided by the collecting area will reveal new classes... | http://www.scholarpedia.org/article/Square_kilometre_array | 13 |
10 | When it comes to orbits, Johannes Kepler knew his stuff. He’s the one who in 1602 realized that planets orbit in ellipses rather than circles, which became the first of his Three Planetary Laws. But no one is perfect, and these were not his first attempts at describing the motions of the Heavens. In 1596 he published M... | http://threesixty360.wordpress.com/tag/kepler/ | 13 |
23 | This page describes a programming technique called Recursive Programming,
in which a procedure calls itself repeatedly until some escape condition is met.
Recursive programming is a powerful technique that can greatly simplify some programming tasks. In summary,
recursive programming is the situation in which a procedu... | http://www.cpearson.com/excel/RECURSIVEPROGRAMMING.ASPX | 13 |
26 | Sirius is the brightest star in the night sky. With a visual apparent magnitude of -1.46, it is almost twice as bright as Canopus, the next brightest star.
The name "Sirius" is derived from the Ancient Greek Seirios ("glowing" or "scorcher"). The star has the Bayer designation Alpha Canis Majoris. What the naked eye pe... | http://www.crystalinks.com/sirius.html | 13 |
23 | Evidence of Design in Mathematics
Galileo, one of the founders of modern science, said, "The book of nature is written by the hand of God in the language of mathematics." Paul Dirac, one of the leading figures in twentieth century physics said, "God chose to make the world according to very beautiful mathematics." To a... | http://www.themoorings.org/apologetics/theisticarg/teleoarg/teleo2.html | 13 |
74 | Elementary Human Genetics
The Central Asian Gene Pool
The Karakalpak Gene Pool
Discussion and Conclusions
Elementary Human Genetics
Every human is defined by his or her library of genetic material, copies of which are stored in every cell of the
body apart from the red blood cells. Cells are classified as somatic, mean... | http://www.karakalpak.com/genetics.html | 13 |
15 | Issue Date: September 28, 2009
Moon's Surface Holds Water
Less than two weeks before a spacecraft is set to slam into the moon’s surface in search of water, a flurry of new reports from other spacecraft offer convincing evidence that the moon’s surface is lightly permeated with either water or its precursor, hydroxyl r... | http://cen.acs.org/articles/87/i39/Moons-Surface-Holds-Water.html | 13 |
17 | Why not build a small resonance based linear particle accelerator?
The study of particles, the building blocks of matter, revolves around the ability to study their composition, mainly by accelerating them to high velocities and then colliding them with something. While physicists have had this ability for the better p... | http://www.mpetroff.net/projects/linear-particle-accelerator/ | 13 |
23 | On February 17, 2006, the village of Guinsaugon on Leyte Island in the Philippines disappeared. After several days of unusually heavy rain, a massive landslide swallowed more than 350 houses and an elementary school, burying more than 1,100 people. Residents of the village, situated at the foot of a mountain, had no wa... | http://earthobservatory.nasa.gov/Features/LandslideWarning/ | 13 |
39 | How the Shape of a Histogram Reflects the Statistical Mean and Median
You can connect the shape of a histogram with the mean and median of the statistical data that you use to create it. Conversely, the relationship between the mean and median can help you predict the shape of the histogram.
The preceding graph is a hi... | http://www.dummies.com/how-to/content/how-the-shape-of-a-histogram-reflects-the-statisti.html | 13 |
41 | A map projection is a systematic transformation of the latitudes and longitudes of locations on the surface of a sphere or an ellipsoid into locations on a plane. Map projections are necessary for creating maps. All map projections distort the surface in some fashion. Depending on the purpose of the map, some distortio... | http://en.wikipedia.org/wiki/Map_projection | 13 |
72 | Some Common Alternative Conceptions (Misconceptions)
Earth Systems, Cosmology and Astronomy
The correct conception of seasonal change is that it is caused by the tilting of the earth relative to the sun’s rays. As the Earth goes around its orbit, the Northern hemisphere is at various times oriented more toward or more ... | http://www.apa.org/education/k12/alternative-conceptions.aspx | 13 |
15 | While the United States was fighting to get a man on the Moon by the end of the 1960s, the Soviet Union was working hard to return a sample of lunar soil as part of the robotic Luna program. Some missions were successful and others weren’t, but for decades no one was really sure why. That’s changed: Last week, NASA’s L... | http://motherboard.vice.com/blog/soviet-moon-mystery-solved-by-nasa-50-years-later | 13 |
12 | We are all familiar with the climate on Earth: the seasons, the range of surface temperatures that are just right for being a water world, the oxygen we breathe, the ozone layer that protects us from UV radiation. In short: habitable.
So what other bodies in the Solar System might be (or might have been) habitable, and... | http://blog.nasm.si.edu/category/planetary-science/ | 13 |
21 | Symbols are the basic building blocks of mathematics. After you have studied mathematics at advanced level for a while you will come to appreciate that certain symbols tend to mean certain things. For example x and y are used to represent variables, whereas a and b are used to stand for constants. Greek symbols are com... | http://www.mathsnetalevel.com/module.php?ref=E1 | 13 |
10 | The Möbius strip or Möbius band is a topological object with only one side (one-sided surface) and only one boundary component. It was co-discovered independently by the German mathematicians August Ferdinand Möbius and Johann Benedict Listing in 1858. A model can easily be created by taking a paper strip and giving it... | http://www.fact-archive.com/encyclopedia/M%F6bius_strip | 13 |
18 | This material may be copied only for noncommercial classroom teaching purposes, and only if this source is clearly cited.
Human Evolution Patterns
|Students describe, measure and compare cranial casts from contemporary apes (chimpanzees and gorillas, typically), modern humans and fossil "hominins" (erect and bipedal fo... | http://www.indiana.edu/~ensiweb/lessons/hom.cran.html | 13 |
20 | Note: Teachers notes are in red
This activity focuses on some of the implications of the dramatic increase in world population and on the unequal distribution of resources among six regions of the world. Students will consider their perceptions of world regions and then use data to examine the quality of life in those ... | http://www.nationalgeographic.com/gaw/pop/pop_912_teacher.html | 13 |
19 | A wind profiler is a type of weather observing equipment that uses radar or sound waves (SODAR) to detect the wind speed and direction at various elevations above the ground. Readings are made at each kilometer above sea level, up to the extent of the troposphere (i.e., between 8 and 17 km above mean sea level). Above ... | http://en.wikipedia.org/wiki/Wind_profiler | 13 |
15 | Connect to share and comment
NASA estimates that around 4,700 asteroids are close enough and big enough to pose a risk to Earth.
NASA estimates there are around 4,700 asteroids that are close enough, and big enough, to pose a risk to Earth.
According to CNN, the number of asteroids, give or take about 1,500 is, "how ma... | http://www.globalpost.com/dispatch/news/science/120517/nasa-finds-4700-potentially-dangerous-asteroids | 13 |
15 | Updated 02 Feb 2012
This page is for those who are just starting out in astronomy and telescopes. It will provide a basic introduction to telescope
All telescopes use either a lens or a mirror (some use both) to gather incoming light and to form an image from that light. The telescope's eyepiece takes the image formed ... | http://www.rocketroberts.com/astro/eyepiece_basics.htm | 13 |
22 | diagrammatic means of representing sets and their relationships. The first use of "Eulerian circles" is commonly attributed to Swiss mathematician Leonhard Euler (1707–1783). They are closely related to Venn diagrams.
Venn and Euler diagrams were incorporated as part of instruction in set theory as part of the new math... | http://www.eskesthai.com/search/label/Venn | 13 |
74 | Science Fair Project Encyclopedia
This article is about angles in geometry. For other articles, see Angle (disambiguation)
An angle (from the Lat. angulus, a corner, a diminutive, of which the primitive form, angus, does not occur in Latin; cognate are the Lat. angere, to compress into a bend or to strangle, and the Gr... | http://www.all-science-fair-projects.com/science_fair_projects_encyclopedia/Angle | 13 |
22 | Use the Law of Cosines with SSS
When you know the values for two or more sides of a triangle, you can use the law of cosines. In the following case, you know all three sides (which is called SSS, or side-side-side, in trigonometry) but none of the angles. What you see here is how to solve for the measures of the three ... | http://www.dummies.com/how-to/content/use-the-law-of-cosines-with-sss.navId-420746.html | 13 |
10 | When James Clarke Maxwell was doing his work with electrodynamics, several of the concepts that we have been considering had not yet been introduced to the world of mathematics. For instance, vector calculus was a very young discipline, and many of the operators currently in use (Div, Curl, the Laplacian) did not exist... | http://en.m.wikibooks.org/wiki/Electrodynamics/Maxwell's_Equations | 13 |
29 | Although you might not know it, your thinking and questioning can be the start of the scientific inquiry process. Scientific inquiry refers to the diverse ways in which scientists study the natural world and propose explanations based on the evidence they gather. If you have ever tried to figure out why a plant has wil... | http://district.fms.k12.nm.us/Departments/currinst/textbooks/Science/Life_Science_Textbook/iText/products/0-13-190309-8/ch1/ch1_s2_1.html | 13 |
51 | In 1929, Edwin Hubble discovered that the universe was expanding, and the velocity of expansion was a function of the distance from the Earth. For example, galaxies at a “proper distance” D from the Earth were moving away from the Earth at a velocity v, according to the following equation: v = H0D, where H0 is the cons... | http://www.louisdelmonte.com/unraveling-the-universes-accelerated-expansion/ | 13 |
34 | Comets are relatively small icy bodies, often only a few kilometers in
extent, that formed in the outer solar system where temperatures are cold
enough to sustain (predominately water) ices. They represent the leftover
bits and pieces from the outer solar system formation process that took
place some 4.6 billion years ... | http://ssd.jpl.nasa.gov/?comets | 13 |
23 | Geocentricity and Creation
by Gerald A. Aardsma, Ph.D.
1. What is geocentricity?
Geocentricity is a conceptual model of the form of the universe which makes three basic assertions about the nature of the earth and its relationship to the rest of the universe. These are:
a. the earth is the center of the universe,
b. th... | http://www.icr.org/article/382/ | 13 |
20 | |acceleration||The acceleration of an object measures the rate of change in its velocity. We use the second derivative [ f ''(t)] to calculate this.|
An angle between 0o and 90o.
|addition rule (probability)||
P(A or B) = P(A) + P(B) – P(A and B)
We can use this for all types of events. However, if the events are mutua... | http://www.youcandomaths.co.za/eng/dictionary/ | 13 |
13 | Mercury's elliptical orbit takes the small planet as close as 29 million miles (47 million kilometers) and as far as 43 million miles (70 million kilometers) from the sun. If one could stand on the scorching surface of Mercury when it is at its closest point to the sun, the sun would appear almost three times as large ... | http://science.nationalgeographic.com/science/space/solar-system/mercury-article/ | 13 |
50 | Circumference Of a Circle When Radius is Given Video Tutorial
circles video, circumference video, curves video, plane figures video, radius video, shapes video.
Watch Our Video Tutorials At Full Length
At TuLyn, we have over 2000 math video clips. While our guests can view a short preview of each video clip, our member... | http://tulyn.com/4th-grade-math/radius/videotutorials/circumference-of-a-circle-when-radius-is-given_by_polly.html | 13 |
21 | During the first two years of primary education children can learn to do arithmetic faster and better with the help of a more systematically structured educational programme. For older children, teaching arithmetic with the systematic use of visual aids, such as blocks and strings of beads, has many advantages. This is... | http://phys.org/news/2012-02-children-arithmetic-faster.html | 13 |
22 | According to a NASA press release, about half of Greenland's surface ice sheet naturally melts during an average summer. But the data from three independent satellites this July, analyzed by NASA and university scientists, showed that in less than a week, the amount of thawed ice sheet surface skyrocketed from 40% to 9... | http://www.liveweatherblogs.com/index.php?option=com_community&view=groups&task=viewdiscussion&groupid=44&topicid=5176&Itemid=179 | 13 |
10 | Preliminary data from the Curiosity Mars Science Laboratory, presented at the European Planetary Science Conference on 28 September, indicate that the Gale Crater landing site might be drier than expected.
The Curiosity rover is designed to carry out research into whether Mars was ever able to support life, and a key e... | http://spaceref.com/news/viewpr.html?pid=38722 | 13 |
20 | Exponential Growth and Decay
This section is actually a brief introduction to differential equations. A differential equation is pretty much what it sounds like – it’s an equation that involves a function and its derivative. One of the simplest versions of that would be y=y’.
Also simple is y = ky’, where k is some con... | http://www.theweinerworks.com/?p=1199 | 13 |
16 | Spacecraft navigators do the same thing that ocean-going ship navigators do -- except that
the ocean of space is much, much bigger and more dangerous. How do the navigators know
where the spacecraft is once it leaves Earth?
The path of the spacecraft -- the trajectory -- is planned well before launch. But once the
spac... | http://solarsystem.nasa.gov/galileo/mission/missionops-guiding.cfm | 13 |
48 | Titration is a common laboratory method of quantitative chemical analysis that is used to determine the unknown concentration of a known reactant. Because volume measurements play a key role in titration, it is also known as volumetric analysis.
A reagent, called the titrant, of known concentration (a standard solution... | http://www.reference.com/browse/titration | 13 |
27 | On the grounds of the space center in Jackson (Michigan) is a scale model of the solar system. You can begin at a large sphere that represents the sun, mounted on a post stuck in the ground.
Nearby is a dot that is the planet Mercury. Then you walk, eventually coming to Earth. Then you walk and walk some more. There is... | http://www.cavendishscience.org/phys/howfar/job1.htm | 13 |
25 | The last chapter explained how to draw graphs from equations. This chapter explains how to write equations from graphs of lines.
There are several different forms of a linear equation can take. Slope-intercept form, point-slope form, and general linear form are the three most common forms. The first section focuses on ... | http://www.sparknotes.com/math/algebra1/writingequations/summary.html | 13 |
55 | Using Critical Points
The second sort of critical point is an inflection point. This is a point in the graph where on one side, the slop is increasing, and on the other side, the slope is decreasing. This can happen whether the curve is increasing or decreasing. Look in the following graph at the first inflection point... | http://www.qcalculus.com/cal06.htm | 13 |
11 | M31 has played a pivotal historical role in astronomy. Early observers saw the soft, foggy patch of glowing light as just another spiral nebula but weren't yet equipped with the knowledge to appreciate its nature. The true nature of M31 began to became clear in 1923. In that year Edwin Hubble, using the just completed ... | http://robgendlerastropics.com/M31text.html | 13 |
12 | Ever wonder how much soda or beer can fit into a single can? To find this out you can calculate the volume of a cylinder by using either our cylinder volume calculator below or the manual formula provided.
These calculations are provided for a right circular cylinder where the top and bottom surfaces are parallel. It r... | http://volumes.co/calculate-cylinder-volume/ | 13 |
11 | |Anti-Bullying Poetry Residency|
Extending her workshop to a second or third day, poet Laura Boss encourages students to dig deeper and express their thoughts and feelings about the bullying in a second poem.
She will discuss the various types of poetry allowing students to experiment with another form.
They will learn... | http://projectimpact.org/residencydescriptions.php?p=no&id=24&nav_order=26 | 13 |
37 | The journey to the Moon
On the 25th May 1961 President John F Kennedy told Congress: "I believe that this nation should commit itself, before this decade is out, to the goal of landing a man on the Moon and returning him safely to Earth."
Earthrise over the lunar surface taken from Apollo 8
Many people have expressed t... | http://www.thekeyboard.org.uk/The%20journey%20to%20the%20Moon.htm | 13 |
12 | Scientists studying data from NASA's Galileo spacecraft have found that Jupiter's moon Amalthea is a pile of icy rubble less dense than water. Scientists expected moons closer to the planet to be rocky and not icy. The finding shakes up long-held theories of how moons form around giant planets.
Image: Artist's concept ... | http://phys.org/news4349.html | 13 |
11 | Burns are injuries to tissue that result from heat, electricity, radiation, or chemicals.
Burns are usually caused by heat (thermal burns), such as fire, steam, tar, or hot liquids. Burns caused by chemicals are similar to thermal burns, whereas burns caused by radiation (see Radiation Injury), sunlight (see Sunlight a... | http://www.merckmanuals.com/home/injuries_and_poisoning/burns/burns.html?tabid=tabNav3 | 13 |
13 | Von Neumann architecturecomputing machine that uses a single storage structure to hold both the set of instructions on how to perform the computation and the data required or generated by the computation. Such machines are also known as stored-program computers. The separation of storage from the processing unit is imp... | http://july.fixedreference.org/en/20040724/wikipedia/Von_Neumann_architecture | 13 |
24 | If you are accessing this website right now, then you are almost definitely using a modem! Modem, a combination of the words modulator and demodulator, is a special device used to send data over a phone line to other computers! Most modems are connected to an ISP, or Internet Server Provider, which then connect us to t... | http://library.thinkquest.org/C0115420/Cyber-club%20800x600/Computer%20Parts/Hardware/Modems.htm | 13 |
17 | All Grades: Standards for Mathematical Practice
MP1: Make sense of problems and persevere in solving them
Mathematically proficient students start by explaining to themselves the meaning of a problem and looking for entry points to its solution. They analyze givens, constraints, relationships, and goals. They make conj... | http://map.mathshell.org/materials/stds.php?id=1382 | 13 |
13 | The intersection of two lines, each given by a pair of points (i.e. the respective equations are not used), is obtained by elementary vector considerations.
Objective: to find the intersection of the two lines and .
The projection (blue line ) of the red segment through perpendicular to onto has magnitude , where is th... | http://demonstrations.wolfram.com/IntersectionOfTwoLinesUsingVectors/ | 13 |
12 | Logical arguments are usually classified as either 'deductive' or 'inductive'.
Deduction: In the process of deduction, you begin with some statements, called 'premises', that are assumed to be true, you then determine what else would have to be true if the premises are true. For example, you can begin by assuming that ... | http://www.psych.utah.edu/gordon/Classes/Psy4905Docs/PsychHistory/Cards/Logic.html | 13 |
14 | Angular Constructions Help
The following paragraphs describe how to reproduce (copy) an angle, and also how to bisect an angle.
Reproducing An Angle
Figure 5-13 illustrates the process for reproducing an angle. First, suppose two rays intersect at a point P , as shown in drawing A. Set down the non-marking tip of the c... | http://www.education.com/study-help/article/geometry-help-angular-constructions/ | 13 |
36 | Lunar water is water that is present on the Moon. Liquid water cannot persist at the Moon's surface, and water vapour is quickly decomposed by sunlight and lost to outer space. However, scientists have since the 1960s conjectured that water ice could survive in cold, permanently shadowed craters at the Moon's poles.
Wa... | http://dictionary.sensagent.com/Lunar_water/en-en/ | 13 |
10 | The brain is vital to our existence. It controls our voluntary movements, and it regulates involuntary activities such as breathing and heartbeat. The brain serves as the seat of human consciousness: it stores our memories, enables us to feel emotions, and gives us our personalities. In short, the brain dictates the be... | http://science.education.nih.gov/supplements/nih4/self/guide/introduction.htm | 13 |
11 | Albert Einstein died of a ruptured aneurysm in a New Jersey hospital on April 18, 1955. Although he is best remembered for his extraordinary contributions to modern physics, Einstein's life and thought left an impact not only on science, but also on philosophy, visual art, and literature. Of all his works, his theory o... | http://www.sparknotes.com/biography/einstein/section12.rhtml | 13 |
21 | Before the true distance of the Earth from the Sun was known,
and what the true distances in the Solar System were,
relative distances were measured by the Astronomical Unit.
It still is the most meaningful way to understand the scale of the Solar System
Astronomical Unit: The mean distance of the Earth from the
This d... | http://earthsci.org/fossils/space/solsys/solsys.html | 13 |
12 | According to a paper presented at the 2012 European Planetary Science Congress today, September 25, there is a high probability (under certain scenarios and conditions) that the seeds of life were brought to Earth aboard meteorites, or other pieces of debris originating on other worlds.
Over the past few years, importa... | http://news.softpedia.com/news/Life-Was-Brought-to-Earth-on-Space-Rocks-294579.shtml | 13 |
13 | B. From ________, we can find the size
Molecules of gases, unlike those of solids and liquids, were thought to take up very little of the space the gas occupied, and to zoom about freely all the time except when colliding with each other or with the walls of their container. A set of particles suspended in a fluid is v... | http://www.osti.gov/accomplishments/nuggets/einstein/seeingb.html | 13 |
11 | - "Last ice age" redirects here. This term is also used for the last glacial period of the Quaternary glaciation.
Quaternary glaciation, also known as the Pleistocene glaciation or the current ice age, is the period from 2.58 Ma (million years ago) to present, in which permanent ice sheets were established in Antarctic... | http://en.wikipedia.org/wiki/Last_Ice_Age | 13 |
11 | According to new calculations by NASA experts, the Voyager 1 space probe is farther away from the edge of the solar system than initially calculated. The spacecraft's main mission, more than three decades after launch, is to reach interstellar space.
In order for it to do that, it first needs to exit the solar system. ... | http://news.softpedia.com/news/Voyager-1-Is-Far-From-Solar-System-Edge-290487.shtml | 13 |
25 | Stellar parallax is the effect of parallax on distant stars in astronomy. It is parallax on an interstellar scale, and it can be used to determine the distance of Earth to another star directly with accurate astrometry. It was the subject of much debate in astronomy for hundreds of years, but was so difficult it was on... | http://en.wikipedia.org/wiki/Stellar_parallax | 13 |
12 | |Type||Unsorted associative array|
in big O notation
|Search||O(1 + n/k)||O(n)|
|Delete||O(1 + n/k)||O(n)|
A hash table is one type of tool for sorting and storing information. In computer science, these tools for keeping track of information, or data, are called data structures. A hash table is a data structure that u... | http://simple.wikipedia.org/wiki/Hash_table | 13 |
13 | Locked inside the littlest objects of the solar system—asteroids, comets, and meteorites—is a secret history. These small fry retain many characteristics they had when they formed 4.5 billion years ago. A series of studies in 2012 pried from them telling new clues about how Earth and the other major planets came to be.... | http://discovermagazine.com/2013/jan-feb/25-earths-explosive-origins-revealed | 13 |
13 | Designed to observe electric fields, a spacecraft has inadvertently picked up signs of Earth's cold plasma layer.
The new findings suggest that about two lbs. (1 kilogram) of cold plasma escape from Earth's atmosphere every second.
As physicists further map cold plasma around Earth, they could discover more about how i... | http://news.discovery.com/earth/earth-cold-plasma-layer-found-120127.htm | 13 |
16 | What is a Codec? and How Do they Work?
A Codec refers to an algorithm or a program that is quite often embedded in a hardware piece like an IP Phone, ATA, etc. In case of VOIP, a codec can be used for converting voice signals into digital data and transmitted over any network or through the internet when a VOIP call is... | http://www.numberstore.com/What-is-a-Codec-and-How-Do-they-Work.html | 13 |
13 | Our solar system may have been created in a huge mixing process much bigger than previously imagined, according to research published today.
New analysis suggests a gigantic swirling disk of dust and gas that formed four and a half billion years ago later became our planets, asteroids and comets. The huge dust cloud wa... | http://www.nhm.ac.uk/about-us/news/2006/december/news_10156.html | 13 |
23 | Graph a Sine Function Using Amplitude
The sine function and any of its variations have two important characteristics: the amplitude and period of the curve. You can determine these characteristics by looking at either the graph of the function or its equation.
The amplitude of the sine function is the distance from the... | http://www.dummies.com/how-to/content/graph-a-sine-function-using-amplitude.navId-420747.html | 13 |
12 | All stars follow the same basic series of steps in their lives: Gas Cloud Main Sequence Red Giant (Planetary Nebula or Supernova) Remnant. How long a star lasts in each stage, whether a planetary nebula forms or a spectacular supernova occurs, and what type of remnant will form depends on the initial mass of the star.
... | http://www.astronomynotes.com/evolutn/s3.htm | 13 |
16 | The Chemistry of Biology
Proteins are organic compounds that contain the element nitrogen as well as carbon, hydrogen, and oxygen. Proteins are the most diverse group of biologically important substances and are often considered to be the central compound necessary for life. In fact, the translation from the Greek root... | http://life.familyeducation.com/cig/biology/proteins.html | 13 |
15 | elementary algebraArticle Free Pass
elementary algebra, branch of mathematics that deals with the general properties of numbers and the relations between them. Algebra is fundamental not only to all further mathematics and statistics but to the natural sciences, computer science, economics, and business. Along with wri... | http://www.britannica.com/EBchecked/topic/184192/elementary-algebra | 13 |
38 | Language Arts Lessons
Useful Word Lists
Help and Information
- British Spelling
- Custom Sentences and Definitions
- Funding Sources
- FAQs - Frequently Asked Questions
- Getting Started Welcome Letters
- Handwriting Worksheets
- Our Educational Awards
- Single Sign On via Gmail
- Sequential Spelling Program
- Student ... | http://www.spellingcity.com/fourth-grade-math-vocabulary.html | 13 |
17 | Explaining Variables and Terms Study Guide
Introduction to Explaining Variables and Terms
The human mind has never invented a labor-saving machine equal to algebra.
In this section, you'll learn the language of algebra, how to define variables and terms, and a short review of integers.
Math topics always seem to have s... | http://www.education.com/study-help/article/explaining-variables-terms/ | 13 |
19 | of a predicatea truth-valued function
In mathematics, a function associates one quantity, the argument of the function, also known as the input, with another quantity, the value of the function, also known as the output. A function assigns exactly one output to each input. The argument and the value may be real numbers... | http://www.absoluteastronomy.com/topics/Extension_(predicate_logic) | 13 |
20 | Want to stay on top of all the space news? Follow @universetoday on Twitter
In 1957, the Soviet Union launched the world’s first satellite, known as Sputnik. This changed the course of world history and led the United States, their chief rival in the Space Race, to mount a massive effort of its own to put manned craft ... | http://www.universetoday.com/93078/how-satellites-work/ | 13 |
19 | Schools & Districts
All of Shmoop
Cite This Page
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Table of Contents
Purchase the Sequences Pass and get full access to this Calculus chapter. No limits found here.
Defining Sequences and Evaluating Terms
Let's imagine, instead of numbers, we have a sequence of animals. The sequence begins with three anim... | http://www.shmoop.com/sequences/examples.html | 13 |
11 | When black holes collide
Scientists have created a computer simulation of two black holes colliding which will, ultimately, aid the search for elusive gravitational waves.
For the first time, scientists from the Max Planck Institute for Gravitational Physics (Albert Einstein Institute), Germany, have simulated two blac... | http://www.abc.net.au/science/articles/1999/09/07/49967.htm?site=science&topic=latest | 13 |
13 | Earth From Space: Landsat Satellites' 40-Year Legacy Explained (Infographic)
Since 1972, the Landsat series of satellites have provided high resolution images of the Earth’s surface that are used by businesses, scientists, governments and the military. The Landsat image database provides the longest continuous record o... | http://www.space.com/19716-nasa-landsat-satellites-earth-space-infographic.html | 13 |
20 | Surface area is a two-dimensional property of a three-dimensional figure. Cylinders are similar to prisms in that they have congruent, parallel bases, except cylinders have circles as their bases. To conceptualize surface area of cylinders, we can imagine that the lateral area of a cylinder can be "unrolled" into a rec... | http://www.brightstorm.com/math/geometry/area/surface-area-of-cylinders-problem-2/ | 13 |
11 | Lesson Plan 2: Hot Dog Sales - Solving Linear Equations and Inequalities
Teachers will need the following:
Students will need the following:
- Graphing calculator
- Graph paper
- Large sheets of poster paper
1. Explain that the class has been asked to help the football coach determine the practicality of selling hot do... | http://learner.org/workshops/algebra/workshop2/lessonplan2b.html | 13 |
16 | Measures of Central Tendency
Statistical measures of central tendency or central location are numerical values that are indicative of the central point or the greatest frequency concerning a set of data. The most common measures of central location are the mean, median and mode.
The statistical mean of a set of observa... | http://www.course-notes.org/Statistics/Statistical_Measure_of_Data/Parameters_and_Statistics_Measures_of_Central_Tendency | 13 |
11 | As well as worksheets some ideas on how to get across the idea of thousands, hundreds, tens and units.
Place value and partitioning as well as writing larger numbers in words and figures. Many children find working with larger numbers very difficult, even with the help of a calculator.
When counting up or down in tens ... | http://urbrainy.com/maths/year-4-age-8-9/counting-and-number-year-4 | 13 |
14 | Applications of Integration
by M. Bourne
1. Applications of the Indefinite Integral shows how to find displacement (from velocity) and velocity (from acceleration) using the indefinite integral. There are also some electronics applications in this section.
In primary school, we learned how to find areas of shapes with ... | http://www.intmath.com/applications-integration/applications-integrals-intro.php | 13 |
11 | As convection is dependent on the bulk movement of a fluid it can only occur in liquids, gases and multiphase mixtures.
Natural convection has attracted a great deal of attention from researchers because of its presence both in nature and engineering applications. In nature, convection cells formed from air raising abo... | http://www.reference.com/browse/wiki/Convective_heat_transfer | 13 |
17 | Imagine we have four bags containing numbers from a sequence. What numbers can we make now?
A collection of games on the NIM theme
Caroline and James pick sets of five numbers. Charlie chooses three of them that add together to make a multiple of three. Can they stop him?
Start with any number of counters in any number... | http://nrich.maths.org/public/leg.php?code=72&cl=3&cldcmpid=867 | 13 |
22 | When we look at the solar system now, we see it after it’s had billions of years of evolution under its belt. Things have changed a lot since it first formed out a swirling disk of material, 4.5 billion years ago. We can make some pretty good guesses about the way things looked back then, though. We can see other syste... | http://blogs.discovermagazine.com/badastronomy/2011/11/15/lutetia-may-have-witnessed-the-birth-of-the-earth | 13 |
18 | Unit A: The Life Processes
1. Get Set to Explore
- diffusion: The movement of particles from an area of higher concentration to an area of lower concentration.
- organelle: Small structures inside a cell that perform specific functions.
- ratio: The relationship between two quantities, which can be expressed as a fract... | http://www.eduplace.com/science/hmsc/5/a/simulation/sim_5a.shtml | 13 |
10 | Neptune Comes Full Circle
Neptune has arrived at the same location in space where it was discovered nearly 165 years ago. To commemorate the event, NASA's Hubble Space Telescope has taken "anniversary pictures" of the blue-green giant planet.
Neptune is the most distant major planet in our solar system. Studying thtis ... | http://www.astrobio.net/includes/html_to_doc_execute.php?id=4090&component=news | 13 |
24 | A musician will call the frequency of a sound its pitch. When the frequencies of two pitches differ by a factor of two, we say they harmonize. We call this interval between the two pitches an octave. This perception of harmony happens because the two sounds reinforce each other completely. Indeed, some people have trou... | http://www.itmaybeahack.com/homepage/books/python/html/p05/p05c03_pitches.html | 13 |
67 | Jupiter has 63 confirmed moons, giving it the largest retinue of moons with "reasonably secure" orbits of any planet in the Solar System. The most massive of them, the four Galilean moons, were discovered in 1610 by Galileo Galilei and were the first objects found to orbit a body that was neither Earth nor the Sun. Fro... | http://gravity.wikia.com/wiki/Moons_of_Jupiter | 13 |
22 | Stuve Diagrams are one type of thermodynamic diagram used to represent or plot atmospheric data as recorded by weather balloons in their ascent through the atmosphere. The data the balloons record are called soundings.
To see how to make your own Stuve diagram try following the sounding exercises.
The example below sho... | http://www.csun.edu/~hmc60533/CSUN_103/weather_exercises/soundings/smog_and_inversions/Understanding%20Stuve_v3.htm | 13 |
54 | Section 17: Geography¶
It is very common to have data in which the coordinate are “geographics” or “latitude/longitude”.
Unlike coordinates in Mercator, UTM, or Stateplane, geographic coordinates are not cartesian coordinates. Geographic coordinates do not represent a linear distance from an origin as plotted on a plan... | http://workshops.opengeo.org/postgis-intro/geography.html | 13 |
18 | |This article does not cite any references or sources. (April 2013)|
A comparison sort is a type of sorting algorithm that only reads the list elements through a single abstract comparison operation (often a "less than or equal to" operator or a three-way comparison) that determines which of two elements should occur f... | http://en.wikipedia.org/wiki/Comparison_sort | 13 |
50 | Non-Programmer's Tutorial for Python 3/Defining Functions
To start off this chapter I am going to give you an example of what you could do but shouldn't (so don't type it in):
a = 23 b = -23 if a < 0: a = -a if b < 0: b = -b if a == b: print("The absolute values of", a, "and", b, "are equal") else: print("The absolute ... | http://en.m.wikibooks.org/wiki/Non-Programmer's_Tutorial_for_Python_3/Defining_Functions | 13 |
26 | Live From Mars was a precursor to Mars Team Online.
Activity 1.3: Follow that
Water--Investigations with Stream Tables
Water is essential to life on Earth: its abundant presence on our world
drives the weather and shapes the land by rain, runoff and erosion. Whenever
we see what looks like evidence of liquid water else... | http://quest.nasa.gov/mars/teachers/tg/program1/Act1.3.html | 13 |
35 | It was developed by Charles Spearman in early 1900s and as such this test is also called as Spearman’s rank correlation coefficient. In statistical analysis situation arises when the data are not available to use in numerical form for correlation analysis, but the information is sufficient to rank the data as first, se... | http://www.transtutors.com/homework-help/statistics/nonparametric-tests/spearman-rank-correlation/ | 13 |
10 | To continue students’ understanding of data collection and statistics that they began in sixth grade, Data Distributions focuses on the following aspects of data investigation:
- Questioning and surveys: formulating key questions and deciding what data to collect
- Data collection: deciding how to collect data and coll... | http://www.lwsd.org/Parents/Teaching-Curriculum/Math-Resources/Seventh-Grade-Math/Pages/7th-Grade-Data-Distributions.aspx | 13 |
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