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In this activity related to nanotechnology, learners observe some of the effects that result from creating a thin layer of material several nanometers thick.

In this activity, learners build inexpensive kaleidoscopes using transparency paper and foil (instead of mirrors).

In this math activity, learners experiment with the concept of symmetry.

In this two-part activity, learners explore the properties of liquid crystals, which are responsible for why mood rings change color.