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In this activity, learners imitate the way vocal cords work by building a model from a plastic cup, rubber band, and a straw.

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

Make a big canvas of iridescent color with pvc pipe! In this Exploratorium Science Snack, you'll need to cut and assemble some PVC pipe, but the pay-off, the soap-bubble canvas, is big.

By making models of light waves with paper, learners can understand why different colors appear in bubbles.