There is a bright light in the sky. Sometimes it is round like a ball, and other times it is a crescent. Sometimes it is not there at all! What is this strange and changing thing? It is the moon, of course! Read all about it in this book. 32 pages

Dona does not know which is more fun-learning about the world through science, or writing books for children that tell all about it. She is glad she does not have to decide and can do both!