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In this easy chemistry activity, learners submerge pennies in different liquids (water, lemon juice, vinegar, liquid hand soap, salt water, and baking soda mixed with water) to observe which best clea

In this activity, learners hook up a hair to a lever system and create a hair hygrometer to measure changes in humidity.

In this activity (on page 8), learners model how marble statues and buildings are affected by acid rain.

In this activity, learners explore how environmental engineers might approach solving the problem of an oil spill.