Learn about the four seasons, the moon, animals, types of plants, states of matter, sources of energy, and other fun science facts with Papa Bear, Mama Bear, Sister Bear and Brother Bear. The Berenstain Bears' Almanac covers the holidays, weather, and seasonal signs; The Berenstain Bears' Nature Guide follows the Berenstain Family on a stroll through the natural world, while The Berenstain Bears' Science Fair looks at a variety of machines and projects. 190 pages, softcover.