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In this activity, learners use tonic water to detect ultraviolet (UV) light from the Sun and explore the concept of fluorescence.

Learners observe different light sources, outdoors and indoors, using prism glasses (diffraction glasses) and color filters.

In this international citizen science activity, learners measure their night sky brightness and submit their observations into an online database.

In this activity, learners build a simple pinhole viewer. They use this apparatus to project images from a variety of light sources, including a candle, the Sun, and the Moon.

In this outdoor activity, learners explore UV rays from the Sun and ways to protect against these potentially harmful rays.

In this outdoor activity, learners use only their senses to to find the extremes of several environmental variables or physical factors: wind, temperature, light, slope and moisture.

Use this Moon Map Guide to help learners identify features on the Moon, while looking through a telescope.

This is a classic exercise for visualizing the scale of the Solar System.

This fun and simple hands-on astronomy activity lets learners make 3-dimensional models of the Earth and Moon.

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