Noyce Foundation
Parallelogram
Parallelograms are pairs of triangles all the way around. Pupils measure to determine the area and perimeter of a parallelogram. They then find the area of the tirangles formed by drawing a diagonal of the parallelogram and compare their...
NTTI
If You Hopped Like a Frog
Get your frogs hopping by introducing them to the concepts of ratio and proportion. As a class, they perform arithmetic operations using ratios then discover how they represent quantitative relationships. In groups, they write their own...
Curated OER
Converting Fractions to Percents
In this conversion worksheet, students practice converting fractions to percents. This one-page worksheet contains twenty problems. Answers are included on the same page.
Curated OER
Investigation- What Does It Cost?
Eighth graders investigate percents by comparing different discounts on the same sale item, practice graphing percents, and look at reasonable and unreasonable "percents off" a sale item.
Curated OER
Fractions, Decimals, and Percents: Post Test
Usethis fractions, decimals, and percents learning exercise to have your charges answer multiple choice questions about fractions, decimals, and percents in number and word problems. They complete 10 questions total.
Curated OER
Finding Percent Change
In this percent of change worksheet, learners determine the percent of increase and the percent of decrease. This two-page worksheet contains 24 problems. Answers are provided on the last page.
National Security Agency
It's Probably Probable
Learners make predictions and draw conclusions from given information as they learn the meaning of probability in this vocabulary-rich, integrated activity that presents a variety of teaching strategies to motivate and reach...
Nuffield Foundation
Fractions, Decimals and Percentages
Mathematicians can embark on a math challenge. Fourteen pages of exercises for young algebra learners on fractions, decimals, and percentages let your students put their skills to the test.
Curated OER
1999 U.S. National Chemistry Olympiad Part III
In this chemistry olympiad laboratory worksheet, learners design and carry out two experiments. They design one experiment to test for the percent mass of a substance in a solution and they design another experiment to identify two...
Mt. San Antonio Collage
Exponential Growth and Decay
Start with the basics and move up the exponential ladder to master a variety of problem-solving and application problems. The problems are heavy on exponential growth and decay, compound interest, and natural log.
Math Worksheets Land
Numbers Based on Percentage
Percent proportion problems (say that three times fast!) can be a tricky thing for young mathematicians to ace. But practice makes perfect and this resource provides five different versions of the same topic as a worksheet. Although no...
Illustrative Mathematics
Chess Club
When the membership in a chess club changes, it is your mathematicians' job to find out how many boys and girls are attending and the percent change from last year. The activity provides a great compound problem finding the different...
Illustrative Mathematics
Comparing Years
Who knew that the Egyptian, Julian, and Gregorian year were different lengths? Your mathematicians will! They will have to calculate the difference between the years in seconds and find the percent change. Using dimensional analysis,...
Center for Applied Linguistics
Practical Applications of Fractions, Percents, and Decimals
Young architects are prompted to design a playground in assigned groups. Using a 10 x 10 grid. Your fifth graders will apply their knowledge of fractions, percents, and decimals to the real-world task of designing a playground....
101 Questions
Bed, Bath, and Beyond Coupon
More money for me! Scholars explore two different coupons for Bed Bath & Beyond, one for 20 percent off and one for $5 off an item. Using some concrete examples, they determine conditions for when each coupon would be more beneficial.
National Council of Teachers of Mathematics
National Debt and Wars
Take a functional approach to the national debt. Learners collect information about the national debt by decade and plot the data. They determine whether an exponential curve is a good fit for the data by comparing the percent changes...
National Wildlife Federation
Power Pellets! Nuclear Energy in the United States
Nuclear power provides about 20 percent of the energy generated in the United States. The seventh activity in the series of 12 tackles nuclear power. After sharing what they know about nuclear energy, scholars complete a...
CK-12 Foundation
Prices Involving Sales Tax: Proper Tipping
A five-question interactive challenges mathematicians to find a correct tip and total amount using percents five, 12, and 18. A tool with moveable pieces assists participants in locating answers. Types of questions include...
Noyce Foundation
Photographs
Scaling needs to be picture perfect. Pupils use proportional reasoning to find the missing dimension of a photo. Class members determine the sizes of paper needed for two configurations of pictures in the short assessment task.
Achieve
False Positives
The test may say you have cancer, but sometimes the test is wrong. The provided task asks learners to analyze cancer statistics for a fictitious town. Given the rate of false positives, they interpret the meaning of this value in the...
Curated OER
It's a Gas! Or is it?
Examine the effects of temperature and pressure on solubility and the states of matter of ocean water. Learners make inferences about the unique chemistry of ocean water at different depths. They engage in an activity related to...
EngageNY
Changing Scales
Pupils determine scale factors from one figure to another and the scale factor in the reverse direction. Scholars compute the percent changes between three figures.
Inside Mathematics
Winning Spinners
Winning a spin game is random chance, right? Pupils create a table to determine the sample space of spinning two spinners. Individuals determine the probability of winning a game and then modify the spinners to increase the probability...
National Wildlife Federation
Lights, Camera, Action! Conducting an Energy Audit
Thirty percent of energy used by schools is used inefficiently! Part two in the series of 12 has groups perform energy audits of their schools as part of the Cool Schools Challenge. Each group is assigned a specific room, performs the...
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