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This activity demonstrates the importance of wearing a helmet to protect the brain. An egg is used to symbolize a head with the shell as the skull and the inside of the egg as the brain.

In this hands-on activity, learners simulate the crashing and smashing of a meteor impact using household cooking supplies.

In this online activity, learners will explore size estimation in one, two and three dimensions. Multiple levels of difficulty allow for progressive skill improvement.

In this activity, learners mimic remote sensing. Learners use a stick to measure the distance to a "planet surface" they cannot see, and create their own map of the landscape.

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

This online interactive has three activities in the NanoLab (press the upper right button): Build, Zoom, and Transform.

This fun and simple hands-on astronomy activity describes techniques scientists use to find planets orbiting other stars.

In this experiment, learners examine the way oil affects bird feathers and test different cleanup methods to find out which works best.

In this activity, learners explore the concepts of natural selection and observable traits in a game that can be played at home.

In this activity, learners play a game to simulate the food chain.

Experiment with friction and make bearings for a whirligig! This activity is a nice introduction to friction and bearings and demonstrates why bearings are useful for spinning.

This activity introduces learners to wolf behavior and communication.

This fun and simple hands-on astronomy activity lets learners imagine what would happen if our Sun were replaced with a black hole.