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

Lungometer
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In this environmental health activity, learners investigate their own vital lung capacities.

Breaking Point
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In this activity, learners build penetrometers to test leaf toughness. Biologists measure leaf toughness to study the feeding preferences of insects and bugs.

Bend a Carrot
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In this activity, learners investigate the process of osmosis by adding salt to a sealed bag of raw carrots and comparing it to a control.

Exploring Size: Scented Solutions
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This is an activity in which learners will find that they can detect differences in concentration better with their nose (smelling) than with their eyes (seeing).

Lost Labels
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In this experiment, learners will conduct chemical and physical tests to identify mystery substances.

Odors Aloft
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Learners smell balloons filled with different scents to guess what's inside. From this, they infer the presence and motion of scented molecules.