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In this activity, learners explore how nanosized structures can create brilliant color.

In this activity (posted on April 18, 2011), learners follow the steps to construct a zoetrope, a device that produces an illusion of action from a rapid succession of static pictures, using a 16" bik

In this fun optics activity, learners explore principles of light, reflection (mirrors), and perception. Learners work in pairs and sit on opposite sides of a "two-way" mirror.

In this activity, learners use a laser pointer to project a microscopic image of a liquid sample suspended from the tip of a syringe.

This activity guide includes instructions for building a spectroscope using a standard classroom overhead projector.

In this outdoor, winter activity, learners find living green plants under the snow and determine the light and temperature conditions around the plants.