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In this activity, young learners and their caregivers use non-standard tools, like M&Ms and paper clips, to measure things around their home.

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.

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