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In this outdoor, sunny day activity, learners experiment with paper leaf models to discover how some desert plants conserve water.

In this activity, learners are challenged to design and build a miniature tree house in a potted plant. This activity uses engineering concepts to encourage creativity.

In this activity, learners construct models of plants that are adapted to living under specific environmental conditions.

This paper describes a working-model demonstration of Ernest Rutherford's 1911 experiment about the nature of atoms.

In this activity, learners create a large film of soap and experiment with what can and cannot pass through it.

In "Chemistry Makes Scents," participants use their noses to distinguish between chemicals with very similar structures.