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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 related to the famous "Stroop Effect," learners explore how words influence what we see and how the brain handles "mixed messages." Learners read colored words and are asked to say th

In this activity, learners examine how colored lenses act like filters and absorb all colors of light except for the color of the lenses.

In this lab (Activity #1 on page), learners explore how we see color.

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

In this activity, learners work in groups of four to explore light. Learners create new colors from the primary colors of light from flashlights covered in theatrical gels or cellophane.

Learners experiment to see which colors of light will cause a phosphorescent (glow-in-the-dark) material to glow.

In this four-part activity, learners explore light and sound through a variety of hands-on investigations.

In this activity, learners create colorful bead bracelets to wear outside while searching for matching colors in plants. Learners will be surprised by the variety of colors in nature.

In this activity (p.5-6 of PDF), learners investigate natural selection. Learners discover that natural selection, which takes place over decades, can lead to altered populations within a species.

This simple hands-on activity demonstrates why the sky appears blue on a sunny day and red during sunrise and sunset.