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In this activity, learners use transparent tape and polarizing material to create and project beautifully colored patterns reminiscent of abstract or geometric stained glass windows--no glass required

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

In this activity, learners will create an optical illusion top. Learners will explore color mixing, physics and design through this activity.

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

In this activity on page 13 of the PDF, use a special plastic card that has been painted with a chemical that changes color when it is in UV light.

This fun activity uses simple materials such as milk cartons and mirrors to introduce the ideas of optics and visual perception.