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In this activity, learners use their hands as tools for indirect measurement.

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

In this activity, learners interpret three trackways and use measurements and a formula to infer the relative speed of dinosaurs.

In this activity, learners work in groups to design a parachute out of household items that keeps an egg secure when dropped from a certain height.