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In this activity, learners discover that nanoparticles of gold can appear red, orange or even blue. They learn that a material can act differently when it’s nanometer-sized.

In this chemistry lab activity, learners model the colors of fireworks by burning metallic solutions in a flame and observing the different colors produced.

In this activity, high voltage is applied across a pickle to emit a yellow glow. This activity should only be conducted by skilled adults and is best suited as a demonstration.

In this demonstration/experiment, learners discover that different colors and materials (metals, fabrics, paints) radiate different amounts of energy and therefore, cool at different rates.

This fun and simple hands-on astronomy activity demonstrates the shadow of the Earth as it rises as a dark blue shadow above the eastern horizon.

In this activity/demo, learners are introduced to the connection between medieval stained glass artisans and nanotechnology.

In this optics activity, learners examine how polarized light can reveal stress patterns in clear plastic.

In this activity about the solar system, learners use various light sources to examine ice with different components to understand how NASA studies planets and moons from space.

Create your own spinning top, and explore color, shapes and spinning. This activity contains instructions for making your spinning top, and tips on how to design and decorate it.

In this activity, learners create a water prism to break light into the seven colors of the rainbow.

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

In this activity, learners explore how light and dark colored objects absorb the Sun's radiations at different rates.

In this activity, learners act as the Earth and observe how different angles between the Sun, Earth, and Moon affect the phases of the moon we see each month.

In this activity, learners create a "mini sky" in a glass of water in a dark room.

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