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

Put a string around your head, and play it! Learn about vibration, sounds, and pitch.

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

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.

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