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Life sciences  
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This is a set of three, one-page problems about the size and area of solar panels used to generate power. Learners will will use integer arithmetic to tally the number of hydrogen, oxygen and carbon atoms in a molecule and determine the number of... (View More)

Audience: Middle school
Materials Cost: Free

In this problem set, learners will use an image of satellite-acquired ocean color data to answer a series of questions about the concentration of phytoplankton in certain areas. Answer key is provided. this is part of Earth Math: A Brief... (View More)

Audience: Middle school
Materials Cost: Free
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