Creative Problem-Solving Fun - Develops flexible thinking! The mind-stretching puzzles in this 46-page printable eBook for grades 9, 10, 11, 12 and up (ages 14-18 and adult) help students become fluent, flexible problem solvers who can generate different solutions and different ways to find solutions. Students start with given criteria, determine possible solutions, evaluate them, and then eliminate possibilities before determining a final solution. This collection of fast, fun riddles, puzzles,