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This is an activity about waves. Using marbles, paper clips and rubber bands, learners explore how waves behave.

In this activity, learners make their own pinhole viewer in order to measure the size of the sun.

In this fun and simple hands-on astronomy activity, learners construct a model of our place in the Milky Way Galaxy and the distribution of stars, with a quarter and some birdseed.

This fun and simple hands-on astronomy activity lets learners make 3-dimensional models of the Earth and Moon.

Many people get water from a source deep underground, called groundwater.

This is an activity about turbidity, or the amount of sediment suspended in water.