Paperback
(Random House Books for Young Readers, March 12, 1984)
Illus. in full color. The Bears learn "how things work and other easy science information presented in simple terms and lively pictures."--Child Study Assn.
Hardcover
(Random House Books for Young Readers, Sept. 12, 1977)
A science fair provides the perfect opportunity for Papa Bear to teach Small Bear and his sister some basic facts about simple machines, matter, and energy, and science projects are described that children can work on by themselves