Switch On, Switch Off

"Just before you jump into bed, you flip down the switch.
The light goes off."

Appealing illustrations, clear diagrams, and engaging text makes complex ideas accessible to early elementary-age children. This book introduces power generation, open and closed circuits, energy transmission, and the function of switches by following every step from the power plant to the switches on the wall. Paperback, 32 pages. Ages 5 - 9.