A coin is tossed three times. What is the probability of flipping heads, heads, tails? A dog is tied to the corner of a house by a leash 30 feet long. Over how much area can the dog run? More than 100 problem-solving exercises challenge kids to figure out mathematical problems dealing with probability, geometry, percents, number theory, fractions, algebraic expressions, and other math concepts. Each problem is stated on a reproducible handout. Grades 6-12. Answer key. Illustrated. Good Year Books. 90 pages.