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

This is an activity about robotics programming. Learners will discover how precise programmers have to be as they instruct a friend to make a peanut butter and jelly sandwich.

This fun and simple hands-on astronomy activity lets learners explore the difference between telescope magnification and resolution.

In this two-part activity, learners explore the Earth and Sun's positions in relation to the constellations of the ecliptic with a small model.

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.

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

In this activity, learners use sieves with different-sized holes to sort balls by size.

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

In this group activity, learners will explore the characteristics, functions and uniqueness of the mangrove tree.

This game plays a dozen different sounds, altered to simulate what they would sound like if you had hearing loss.

In this experiment, learners design and build a model room in a shoebox and furnish it with tiny furniture.