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In this simulation activity, learners observe what can happen when ocean waves churn up water and oil from an oil spill.

In this design challenge activity, learners build a four-stringed instrument that can play a tune.

In this activity, learners will explore how light can refract or break apart into different colors.

This lesson (on pages 15-24 of PDF) explores how sound is caused by vibrating objects. It explains that we hear by feeling vibrations passing through the air.