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In this activity, learners explore chemistry and the microbial world by making their own sourdough starter and bread at home using only flour and water.

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

In this activity, learners build their own magnetometer using an empty soda bottle, magnets, laser pointer, and household objects.

In this field study, learners discover how to collect data in the field and how their efforts can help certain animals, specifically, amphibians.

How do scientists measure how clear or murky water in a lake is? How does water clarity (clearness) affect what lives in the lake?