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

In this activity, learners use tsunami time travel maps to predict how long it will take a tsunami to reach the shore.

In this activity (Lesson 1), learners work in groups to create tide simulations.

Can gelatin (like Jell-O ®) change the speed of light?

Learners examine the properties of light by experimenting with an LED-flashlight and polarizing filters. When two polarizers are used, they block all light when they are placed at right angles.