eSchool Today
E School Today: Your Cool Basics on Water Shortage
Despite seventy percent of the world's surface being covered with water, there is a potential shortage of this natural resource. Only a small percentage is fresh water and much of that is inaccessible or threatened. Learn about fresh...
Trinity University
Trinity University: Time and Social Inequality
This site talks about gender roles in today's society. Provided is a chart showing percentages of men and women to different tasks like cleaning and cooking.
Shodor Education Foundation
Shodor Interactivate: Fraction Quiz
This activity allows the student to practice simplifying, converting, and multiplying decimals, percentages, and fractions. There are 3 levels of difficulty and the time limit may be set from no limit to 60 seconds. Additional...
National Council of Teachers of Mathematics
The Math Forum: Beat the Calculator!
Find more than 500 "mental calculation tricks" that will help you square numbers, add, multiply divide, subtract, and find percentages. A great resource for advance math students, gifted children, and teachers wanting to find ideas for...
American Museum of Natural History
American Museum of Natural History: O Logy: The Tree of Life
Learn about the diversity of species on Earth by exploring a cladogram, a graph-like tree of life that illustrates relatedness among species. Includes instructions for reading cladograms and a pie chart that summarizes the percentages of...
Social Science Education Consortium
Ssec: Employment Unemployment: How Can Both Rates Rise at the Same Time? [Pdf]
In this investigation, students are asked to explain a Wall Street Journal (WSJ) announcement about unemployment, and look for a contradiction in the message. Then they are introduced to the definitions of employment, unemployment, and...
Science Buddies
Science Buddies: Proect Ideas: Investigating Inattentional Blindness
The goal of this human behavior science fair project is to investigate inattentional blindness and visual perception and see what percentage of a test population notices an unexplained object in a video. The Science Buddies project ideas...
Science Buddies
Science Buddies: From Gas to Rust: Measuring the Oxygen Content of Air
Earth's atmosphere, the ocean of air that blankets the planet, is mostly nitrogen and oxygen, with small amounts of other gases. How much oxygen is present in air at sea level? Is air high up in the Appalachians or Rockies? Atop Mount...
Science Buddies
Science Buddies: Is That Cat Fat?
There are over 58 million overweight cats and dogs in the United States alone. In this science project you will determine what percentage of the pets you know are overweight and how their weights compare to weight of pets throughout the...
Science Buddies
Science Buddies: Are You Left or Right Sided?
Our brains are split into two parts, right inside our head. One half is the left brain and the other half is the right brain. Each side of your brain controls different parts of your body and most people are more dominant controlling one...
University of Colorado
University of Colorado: Ph Et Interactive Simulations: Radioactive Dating Game
Learn about different types of radiometric dating, such as carbon dating. Understand how decay and half-life work to enable radiometric dating. Play a game that tests your ability to match the percentage of the dating element that...
Wikimedia
Wikipedia: Communist Party of Canada
A comprehensive look at the Communist Party of Canada. Election result statistics show the number of candidates and percentage of popular votes for the party.
Smithsonian Institution
Smithsonian Education: Idea Labs: Prehistoric Climate Change
Sort fossil leaves from 55 million years ago into groups with smooth or 'toothed' edges. Then, use a formula to calculate the percentage of each type and, from there, look at how high the temperature might have risen when global warming...
University of Colorado
University of Colorado: Ph Et Interactive Simulations: Radioactive Dating Game
Learn about different types of radiometric dating, such as carbon dating. Understand how decay and half life work to enable radiometric dating. Play a game that tests your ability to match the percentage of the dating element that...
Other
Language Barriers Imperil Children's Health Care
Language barriers are blamed for a good percentage of non-English speaking children who are eligible for insurance to be without.
Other
Foresty Suppliers: Using Forest Densiometers [Pdf]
Explains what a forest densiometer is, its history, and its use as a tool to measure forest overstory density, i.e., the area percentage that a tree canopy covers.
Social Science Education Consortium
Performance of National Economy: How Do We Measure the Economy's Health? [Pdf]
This investigation helps students clarify economic performance measures. These include: percentage changes in the Gross Domestic Product or the Consumer Price Index, how the labor force is measured, the meaning of employment and...
CK-12 Foundation
Ck 12: Percent Composition and Empirical & Molecular Formulas
[Free Registration/Login may be required to access all resource tools.] In this online tutorial students will learn to calculate the percent composition of a compound either from mass data or from the chemical formula. They will use...
TeachEngineering
Teach Engineering: Obi Wan Adobe: Engineering for Strength
Students conduct an experiment to determine how varying the composition of a construction material affects its strength. They make several adobe bricks with differing percentages of sand, soil, fibrous material and water. They test the...
Other
Achieve: Miniature Golf Design Task [Pdf]
In this task students are asked to combine numerous skills to create a miniature golf hole. Students create a scale drawing of the hole, calculate the area of the hole and determine the percentage of total area used. In addition,...
TeachEngineering
Teach Engineering: Students as Scientists
This curricular unit contains two lessons that let students actually do the work of scientists as they design their own experiments to answer questions they generate. In the first lesson and its associated activity, students conduct a...
Other
Nasdaq: Flashquotes
A helpful source to look up information on any company listed in the NASDAQ. Current price of stock, percentage change in price, and charts showing stock performance over various periods of time are available.
![United Nations: Cartographic Section: Okavango River Basin [Pdf] Graphic](http://lessonplanet.com/content/resources/thumbnails/457765/large/bwluav9tywdpy2symdi1mdqyoc04mzc3mdutcdftbgx4lmpwzw.jpg?1745828804 "United Nations: Cartographic Section: Okavango River Basin [Pdf] Graphic")
United Nations
United Nations: Cartographic Section: Okavango River Basin [Pdf]
This map from the United Nations is a very detailed map of the Okavango River Basin, showing rivers, wetlands, cities, country boundaries and much more. Increase the viewing percentage to read the map easily.
BBC
Bbc Bitesize: Gcse Edexcel: Probability
Find out how probabilities are written as fractions, decimals or percentages on a scale from 0 to 1. Knowing basic facts about equally likely outcomes can help to solve more complicated problems.
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