Because the moon revolves around Earth, it seems to grow and shrink.Children can read about the phenomena of the moon’s phases and with an experiment using an orange, a pencil, and a flashlight, they can see why the moon looks different at different times of the month. ‘A welcome addition to science collections for young children.’ —SLJ.

Franklyn M. Branley is the originator of the Let's-Read-and-Find-Out Science series and the award-winning author of over 140 popular books for readers of all ages. He is Astronomer Emeritus and former Chairman of the American Museum-Hayden Planetarium. Dr. Branley lives in Brunswick, Maine.