What's Wrong with This Picture?: Critical Thinking Exercises in Geometry

Students love to find errors in books and handouts, sometimes more than they love the material itself! What's Wrong with This Picture? uses this enthusiasm to exercise the basic skills of geometry and visual thinking in new and exciting ways. This book contains 50 pages of blackline masters that are perfect as warm-up exercises, homework, or group activities. Each page has up to four problems, of which at least one more contains an error, an optical illusion, or conflicting information; students reason through the problems to find the incorrect one. Such active involvement makes students better problem solvers, deepens their understanding of the concepts, and spurs them to gain a greater mastery and retention of the material.