Mathemagic Author:Raymond Blum "Youngsters are fascinated by magic, and the idea of making it happen in front of friends and family is appealing. These math "magic" exercises begin with the simple and progress to the complex, letting readers find their own levels. Many use a calculator, some require a deck of cards, others just need paper and pencil. There is plenty of materi... more »al here to amuse and challenge....The directions are clear, and the problems work, so there is a guaranteed audience."« less