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In this optics activity, learners explore color by examining color dots through colored water and the light of a flashlight.

In this three-part activity, learners conduct simple experiments to see how light refracts and reflects, and how colors of light affect what we see.

In this activity, learners actually feel the difference in energy required to light two different types of light bulbs: incandescent light and LEDs.

In this activity, learners observe colors in the flame of a burning candle to explore connections between matter, light, color and temperature -- basic concepts of matter and energy.

In this data collection and analysis activity, learners evaluate fish physiology and ecology using vision research data from Dr.

In this optics activity, learners use a shoebox, colored cellophane and sunlight to "change" the colors of gumballs. Learners will be surprised when the green and blue gumballs appear black!

Use this hands-on activity to demonstrate infrared and thermal radiation.