Earth, Water, Fire, and Air: Playful Explorations in the Four Elements
Walter Kraul
Paperback
(Floris Books, July 1, 2005)
This book encourages children's interest in the natural world by showing them how to make things, such as a waterwheel, paddle-steamer, propeller plane, parachute, windmill, simple pendulum clock, spinning tops, a hot-air balloon and much more. All the activities make use of one of the four elements: earth, water, fire or air. Some are simple enough for a six-year-old; others are challenging enough for a twelve-year-old to enjoy.