Why Pi?Book - 2009
Focusing on how people from ancient Egyptians to modern scientists have used numbers to measure things through the ages, "Why Pi?" makes math interesting and is filled with games, puzzles, brainteasers, and fun facts.
Publisher: New York, N.Y. : DK Pub., 2009.
Characteristics: 93 p. :,col. ill., col. maps ;,29 cm.