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In this activity, learners make a miniature greenhouse or "terrarium" to explore the greenhouse effect.

Learners work in teams to investigate how scientists use physical characteristics to classify living things.

This activity helps learners understand how the angle of the Sun affects temperatures around the globe.

Using simple, inexpensive items, learners build and test submarine models.

Learners use simple materials to construct a model the Big Dipper. Learners hang the model from a doorway or ceiling and look up at it to see the constellation as seen from Earth.