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In this online activity, learners build their own system of heavenly bodies and watch the gravitational ballet.

In this activity (on page 5 of PDF), learners use dry ice and household materials to make scientifically accurate models of comets.

This fun and simple hands-on astronomy activity lets learners experiment with marbles and weights to discover some basics about gravity and black holes.

In this activity, learners create a map of a hidden surface using a "sounding stick" -- a technique similar to how underwater maps were once made.

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.

In this activity, learners get hands-on with geometry by making a polyhedron kitty sculpture.

In this activity, learners build a scale model of the solar system using a roll of toilet paper.

This activity introduces learners to the structure and properties of carbon nanotubes.