Number Sense and Nonsense Author:Claudia Zaslavsky These 80-plus math activities and number games help kids to think intuitively about math instead of just memorizing rules. The emphasis is on the underlying relationships between numbers and the process of manipulating them, not in coming up with the right answer every time. Kids get together and play games with odd and even numbers, prime and c... more »omposite numbers, factors, divisors, and multiples of numbers, common and decimal fractions. Children learn the history of numbers-finger counting, number symbols in various cultures, and different ways of calculating. The book is full of riddles, puzzles, number tricks, and calculator games. Kids develop skills in estimation and computation as they become familiar with the characteristics and behavior of numbers. They will gain math confidence and be ready to take chances, find their own errors, and challenge their peers.« less