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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.

This is a quick activity (on page 2 of the PDF under Butterfly Wings Activity) that illustrates how nanoscale structures, so small they're practically invisible, can produce visible/colorful effects.

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

This is an activity exploring color and color mixing.

This activity generates learner excitement about light through the creation of a room-sized rainbow.

In this activity, learners explore color, light and shadow by creating their own puppets to hold in front of a light source.