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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 activity (4th activity on the page), learners test to see if saliva is necessary for food to have taste.

In this activity (17th on the page), learners investigate why you cannot see colors in dim light.

In this activity, learners work together to create a life-sized drawing of the human nervous system.

Learners make kimchee or sauerkraut, which is really just fermented cabbage, in a 2-liter plastic bottle.