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In this activity about light and reflection, learners use a special device called a Mirage Maker™ to create an illusion.

In this activity, learners use food scraps from the kitchen to grow new vegetables.

In this optics activity, demonstrate diffraction using a candle or a small bright flashlight bulb and a slide made with two pencils.

In this activity, learners explore how different deodorants work. Learners treat agar plates with different types of deodorants and compare the bacteria growth on the plates to the control sample.

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

In this activity, learners explore chemiluminescence and fluorescence. Learners examine 3 different solutions in regular light, in the dark with added bleach solution, and under a black light.

In this optics/mathematics activity, learners use two hinged mirrors to create a kaleidoscope that shows multiple images of an object.

In this activity about afterimages, learners explore what happens when receptor cells called cones in your eye's retina get tired.

In this activity, learners make their own heat waves in an aquarium.

In this activity, learners make a photographic image—without a camera!

This activity shows you how to make a mold terrarium using a jar and leftover food.

In this activity about light and reflection, learners discover that what you see is often affected by what you expect to see.

In this activity, learners model directed evolution by making paper fly. Learners construct and fly paper airplanes.

In this activity, learners play with a fuzzy-colored dot that has no distinct edges seems to disappear. As learners stare at the dot, its color appears to blend with the colors surrounding it.

In this activity about osmosis, learners use a naked egg (one with a dissolved eggshell) to learn about selectively permeable membranes.

The Ancient Egyptians used a naturally-occurring salt from the banks of the Nile River, called natron, to mummify their dead.

If you had a long tube with a 5 millimeter wide slit, would you see the entire Golden Gate Bridge?

In this science trick, learners get an egg to stand-up on its long-axis vertical to a table's top.

Which one of your eyes are dominant? Do they act independently or are they equally "in control?" This activity explores how your eyes work (or don't work) together.

In this activity about depth perception, learners create an optical illusion in a shoe box.