Mathamusements

An alphabetically arranged introduction to a variety of math tricks and activities, including "Finger Math", "Geometric Masterpieces", and "Numerology".
Back cover of this edition:
Math can be magic!
These tricks, puzzles, memory tests, and other experiments will get you started. All you need is a pencil, a piece of paper, and a few supplies handy around the house. Guess your friend's secret number. Balancing Act shows how you draw half a painting, and the paper creates the other half. Cricket Thermometer tells the correct time by counting the number of times a cricket chirps in 15 seconds. Or try the dozens of other fun challenges. Draw special straight lines that turn into circles. Get your Favorite Number to show up on a calculator every time. Try Zooming—taking a favorite cartoon and enlarging it with just pencil and paper. Grab this book and you'll be ready to have fun with numbers.