Title: High school geometry teachers would ban this book
Review: The rhymes are cute, but the main goal of an educational book should be to get the facts right. This one doesn't. The author explicitly states that for an object to be a rectangle, a quadrilateral must have two long sides and two short sides. This is incorrect. Every square is a rectangle. To make matters worse, the author goes on to imply that rotating a square 45 degrees will cause it to become a "diamond." First, there is no such shape as a diamond in geometry. Second, changing the orientation of a shape does not change what it is. I'm sick to death of trying to beat these misconceptions out of the heads of my high school geometry students. Avoid putting them into your child's head in the first place: Buy a different book.
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