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Mirrors and Images
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In this optics activity, learners explore how many objects they can see in a set of mirrors (hinged like a book) at various angles.

CD Spectroscope
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In this activity, learners use an old CD to construct a spectroscope, a device that separates light into its component colors.

Pinhole Viewer
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In this activity, learners discuss and investigate how cameras, telescopes, and their own eyes use light in similar ways.

Earth's Energy Cycle: Albedo
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In this activity, learners experiment and observe how the color of materials that cover the Earth affects the amounts of sunlight our planet absorbs.

Magic Wand
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In this activity about light and perception, learners create pictures in thin air.

Beyond Dominoes: Polyominoes
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In this activity, learners add squares to paper dominoes to make polyominoes.

Mirror, Mirror on the Wall: Angles of Reflection
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In this optics activity, learners work in pairs to explore how mirrors work. Learners use tape to mark the angles needed to see each other's reflection in a wall mirror.

Critical Angle
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In this optics activity, learners examine how a transparent material such as glass or water can actually reflect light better than any mirror.

Make a Light Fountain
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In this optics activity, learners make a "light fountain" from a clear plastic bottle, flashlight, and other simple materials.

Mirror Reversal
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Challenge popular misconceptions, learners explore how a mirror actually reflects an image in this activity.

Reflections
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In this activity, learners play a game and use pattern blocks to explore mirror images and reflection.

Disappearing Glass Rods
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In this optics activity, learners discover how they can make glass objects "disappear." Learners submerge glass objects like stirring rods into a beaker of Wesson™ oil to explore how the principles of

Mirror Messages
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In this activity, learners use mirrors to write secret messages to a friend. Use this activity to explore letters, optics, and/or symmetry.
Transparent Gelatin
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In this optics activity, learners explore how they can make gelatin stop light, but not stop them from seeing fruit suspended within.

Experimenting with Symmetry
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In this activity, learners use pattern blocks and mirrors to explore symmetry. Learners work in pairs and build mirror images of each other's designs.
Splitting White Light
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In this optics activity, learners split white light into all its component colors using three household items: a compact disc, dishwashing liquid, and a hose (outside).

Cut-Fold-Staple
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In this activity, learners discover how to rotate a flat shape into the third dimension. Learners draw and cut out a shape that has at least one straight edge on an index card.

Symmetry Fold-Overs
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In this math activity, learners experiment with the concept of symmetry.

Mirror, Mirror
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In this activity, learners discover that it is difficult to trace a curve by using its reflection in a mirror. Use this activity to discuss how the brain works.

Exploring Tessellations (Grades 6-8)
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In this activity, learners design unique tiles and make repeating patterns to create tessellations. This activity combines the creativity of an art project with the challenge of solving a puzzle.