NumberNut
Number Nut: Percentages
Did you know that the word percent is based on two ancient words, "Per" and "Centum" which means part of one hundred? Learn how to calculate percent and find out how it is used in business.
E-learning for Kids
E Learning for Kids: Math: Treasure Island: Fractions, Decimals and Percentages
Can you find Short Jack Gold's treasure? Help him solve the fraction and decimal problems!
E-learning for Kids
E Learning for Kids: Math: Husky Sled: Decimals and Percentages
On this interactive site students learn to express hundredths as fractions and decimals, place decimals in ascending order, and represent simple fractions and decimals as percents.
CK-12 Foundation
Braingenie: Whole Number Percentage Calculations Without Units
[Free Registration/Login may be required to access all resource tools.] In this activity, students are to determine the percent of a number. Watch a video for additional help and answer a practice problem.
Google
Google for Education: Percentages
This activity asks learners how to quickly and accurately calculate percent problems in our heads.
E-learning for Kids
E Learning for Kids: Math: Street Orchestra: Fractions and Percentages
Adolfo loves Music and Math! Did you know musical notes can be expressed as fractions, decimals, and percents?
Yale University
Solving Problems by the Hundreds
This site contains a study of percentage and its applications in the study of consumer related problems. Problems involving sales tax are included. Examples, explanation, solutions and a bibliography are also included in the site.
Math Drills
Math Drills: Percents Worksheets
Download these worksheets to sharpen your percent calculation skills. Sheets focus on the percentage of a number, percentage rate, and percentage increase/decrease.
Math Open Reference
Math Open Reference: Percent
Explore percents with this easy reference guide. Learn how to convert fractions to percents and percents to fractions. Try the sliding bar to see how a percentage is calculated. Detailed explanations and examples are included.
Iowa State University
Iowa State University: Amount of Water in a Crystalline Solid Hydrate
This tutorial is linked to a computer simulation and helps strengthen student's understanding of percentage yield.
Smithsonian Institution
Smithsonian Learning Lab: Prehistoric Climate Change and Why It Matters Today
Introduce students to environmental issues by studying a time of rapid global warming that occurred 50 million years ago. Lessons, video segments and interactive activities will engage students as they learn about average annual...
Other
Miniature Earth: Comparative Demographics Worldwide
Miniature Earth reduces the world's population to 100 to underscore the dramatic differences in wealth, age, faith, education, environment, and health among people who live on this planet. An excellent apply-what-you-know site for...
Shodor Education Foundation
Shodor Interactivate: Estimator Quiz
This activity allows the student to practice estimating the results of addition multiplication and percentage problems. The activity has 3 levels of challenge.
BBC
Bbc Skillswise: Probability
Use fractions and percentages to solve probability problems. Skillswise provides five factsheets, four quizzes, four worksheets, and a game pertaining to probability.
Education Development Center
Tune in to Learning: Multiple Percents
Have you ever seen an item that you wanted on sale for 15% of its original price? Have you tried to figure out what the sale price would be? Using this interactive lesson from T.V. 411, you can learn to calculate discounts with percentages.
Microsoft
Microsoft Education Virtual Tour: Batter Up!
This downloadable (2.7 MB Microsoft PowerPoint file) project helps students apply their knowledge of fractions and decimals to the game of baseball. They compute batting averages and hitting percentages and participate in a simulated...
National Council of Teachers of Mathematics
The Math Forum: Finding 2.5 Percent of a Number
This site provides shortcuts and hints on how to do more complicated percentages without a calculator. For others beside 2.5, scroll down the left column and click percentage of choice under "Percents."
CK-12 Foundation
Ck 12: Arithmetic: Conversion of Decimals, Fractions, and Percent
[Free Registration/Login may be required to access all resource tools.] Learn how to convert between percentages, decimals, and fractions.
BBC
Bbc: Gcse Bitesize: Monitoring Chemical Reactions
This lesson focuses on percentage yield including what it is, the formula for calculating percentage yield, a sample calculation, and a link to a test.
Council for Economic Education
Econ Ed Link: Be All You Can Be for Minimum Wage? (Educator Page)
This lesson ask students to calculate the percentage change in military strength over the last two decades, hypothesize economic (and non-economic) explanations for these changes, test hypothetical explanations by reading an economic...
Council for Economic Education
Econ Ed Link: Be All You Can Be for Minimum Wage? (Student Page)
This lesson ask students to calculate the percentage change in military strength over the last two decades, hypothesize economic (and non-economic) explanations for these changes, test hypothetical explanations by reading an economic...
Texas Instruments
Texas Instruments: Eating Out
In this activity, students examine data and make graphs to represent the data. They interpret the data and answer questions. They also learn to calculate percentages and angle measures.
Texas Instruments
Texas Instruments: Meal Manager
In this activity, students can use percentages and proportional reasoning skills to solve problems.
Texas Instruments
Texas Instruments: Finding the % Salt in Seawater
In this experiment, students are asked to collect data in order to prepare a calibration curve showing the relationship between the percentage of salt and the mass of salt water. Using this graph, students will be able to determine the...
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