Mistakes That Worked: 40 Familiar Inventions & How They Came to Be

Popsicles, potato chips, Silly Putty, Velcro, and many other familiar things have fascinating stories behind them. In fact, dozens of products and everyday items had surprisingly haphazard beginnings. Mistakes

Whose Tracks Are These? A Clue Book of Familiar Forest Animals

A series of clues and striking illustrations detail how to identify a variety of pawprints found in the woodlands. Ages 6-10 Product Features Whose Tracks Are These A Clue