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In this activity, learners mark their height on a height chart and discover how tall they are in nanometers.

In this international citizen science activity, learners measure their night sky brightness and submit their observations into an online database.

In this activity, learners sniff out scents hidden in balloons! After investigating, learners discover we sometimes can use another sense (smell) to detect things too small to see.

This fun and simple hands-on astronomy activity lets learners build a scale model of the universe with little more than adding machine tape.

"What's in the Water" lets participants use tools to solve the mystery- what chemicals and compounds are in a sample of water?