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

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.

In this activity (posted on March 27, 2011), learners follow the steps to construct a mini zoetrope, a device that produces an illusion of action from a rapid succession of static pictures.