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The "Rocket Reactions" activity is an exciting way to learn about how materials interact, behave, and change.

In this activity (last activity on the page), learners make a model of the eardrum (also called the "tympanic membrane") and see how sound travels through the air.

In this activity, learners explore in what ways the shape of the land and the pull of gravity influence how water moves over Earth.

In this activity, learners explore how distance can affect the way we perceive the size of an object.