Packed with puzzles and activities, this entertaining activity book covers all kinds of measuring, from using a ruler to reading scales. Discover the different

A lively and dynamic introduction to an important, though sometimes difficult, subject to tackle. Learn how to measure time, speed, length, temperature, mass an

Lisa's homework assignment is to measure something. The fun begins when she decides to measure her dog, Penny.

Who knew rulers could be so much fun? Little kids do, though they don't always have a firm grasp of how to use their rulers. Along comes How Big Is the Pig?, th

Social scientists seek to develop systematic ways to understand how people make meaning and how the meanings they make shape them and the world in which they li