Curated OER
NUMB3RS Activity: A Matter of Half-Life and Death
Students investigate exponential decay. Students explore the biological half-life of Cesium-137. Students investigate the Goiania Accident of 1987 which is considered one of the worst incidents in the history of the Atomic...
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Conversions: Metrics Made Easy
Students, in groups, measure and record each other's height. They identify measurement conversion methods and use online resources to convert measured heights to multiple systems.
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Metric Mania-English to Metric Conversions
In this unit conversions learning exercise, students convert from the English system of measurement to the metric system and from the metric system to the English system.
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Washington D.C. from Space
In this Washington D.C. from space worksheet, students use a picture generated by the International Space Station and they find the scale of the image. They determine the actual size of features in the image, they find the distances...
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Craters on the Moon
In this moon craters instructional activity, learners use a high resolution image of the lunar surface and calculate the image scale in meters per millimeter. They use the image scale to find the largest crater in the image, the smallest...
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Area and Perimeter of a Square
In this area and perimeter activity, students read the instructions and study the examples to learn how to find the area and perimeter of a square. Students solve 30 problems. This page is intended as an online activity, but may be...
Illustrative Mathematics
Pennies to Heaven
Even though pennies seem to be relatively thin, stack enough of them into a single stack, and you could have quite a high stack. Enough so, that the final result can be a surprise to you as well as your class. This activity centers...
Illustrative Mathematics
Making Cookies
Hooray for chocolate chip cookies! Ask your mathematicians to triple a chocolate chip cookie recipe and then reduce the recipe by one-fourth. Your class may need two days to complete, tripling the recipe the first day and reducing the...
Teach Engineering
Fairly Fundamental Facts About Forces and Structures
Don't twist and turn looking for a resource. The first installment of a six-part series teaches young engineers about the five fundamental forces of compression, tension, shear, bending, and torsion. These forces help explain different...
Curated OER
12 Hour to 24 Hour Clock Conversion (1 of 2)
In this time conversion worksheet, students convert times from twelve hour format to twenty-four hour format in 29 problems. They write the equivalent time on the blank next to the original time.
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Review 13.1-13.2: Unit Circle
In this unit circle worksheet, students find the sine, cosine, tangent, cotangent, and co-secant of given values. They determine the exact value of trigonometric ratios. Students convert from degrees to radians. This two-page worksheet...
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Density of the Human Body
In this density of the human body activity, students measure several parts of the body to calculate the body volume. Students convert the body volume to body mass and body density.
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TE Lesson: Kinetic and Potential Energy of Motion
Students investigate the difference between potential and kinetic energy. They examine the formulae associated with both types of energy. They complete how quickly a pendulum with swing by converting potential energy into kinetic energy.
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Coastal Threat: A Story in Unit Conversions
Students convert measurements from one unit to another. In this math lesson, students study the environmental consequences of oil spills. They replicate an oil spill event by modeling and scaling.
Helping with Math
Ratio and Proportion: Simplifying Ratios (1 of 2)
Here is a set of 24 pairs of numbers for which kids reduce the ratios to their simplest form. It is a simple and straightforward assignment, meant by the publisher to address CCSS.Math.Content.6.RP.3. Note, however, that it only requires...
Curated OER
Percent of Change
In this algebra worksheet, students convert between percents and decimals. They calculate sales tax, discounts and relative errors. There are 4 questions with an answer key.
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Thermal Energy and Heat Unit
Learners explain that heat energy in a material consists of the disordered motions of its atoms or molecules. They know and explain that transformations of energy usually transform some energy into the form of heat, which dissipates by...
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Unit 5: Worksheet 2 - Ratios
For this ratio worksheet, students investigate the relationship between the ratio of two sides of similar triangles. Afterwards, they convert fractions, decimals, and percents. This three-page worksheet contains approximately 35...
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It's About Time!
Young scholars examine concept of time, and explore difference between analog and digital clocks; students make art project to represent time and create a time-story problem and solution.
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Everyday Problems with Decimals
Review word problems and decimals with a worksheet that features everyday problems for your students to solve. Six problems provide space for both work and the solution, reinforcing the importance of showing one's work in word problems....
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Time Conversion
In this converting times worksheet, students covert times to the twelve or twenty-four hour clock alternative convention. Students write 28 answers.
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Covert Twelve Hour Times to Twenty-Four Hour Times
In this converting clock times learning exercise, students change twelve hour clock formats to twenty-four hour clock conventions. Students write 29 answers.
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Decibel Measurements
In this decibel learning exercise, students answer 19 questions about amplifiers, circuits and the power gains or losses in these electrical systems.
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Planets in Proportion
Learners apply estimation strategies and proportional reasoning to determine a scale comparing the planetary bodies to Earth. They convert measurements of time and distance using scientific notation. Both the metric and customary units...