Age Range: 6 - 7 years
Grade Level: 1 - 2
Paperback: 32 pages
Publisher: HarperCollins UK (January 1, 2005)
Language: English
Product Dimensions: 0.2 x 0.1 x 0.3 inches

How does a yo-yo climb back up its string? Why does a boomerang come back to you? And how does a kaleidoscope work? These and other mind-bending questions are answered in this explanation text about how toys work.