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This activity investigates how bark beetles can threaten forests by having learners estimate the number of infected trees from a photo.

In this four-part activity, learners explore how the body works and the chemistry that happens inside living things.

In this activity with several mini experiments, learners explore the chemistry that helps scientists learn about the environment and how they can help save it.

In this four-part activity, learners explore light and sound through a variety of hands-on investigations.