Без серии
- 1. Math Puzzles and Brainteasers, Grades 6-8. Over 300 Puzzles that Teach Math and Problem-Solving Skills (тип: электронная)
- 2. Math Puzzles and Brainteasers, Grades 3-5 (тип: электронная)
- 3. Math Puzzles and Brainteasers, Grades 6-8. Over 300 Puzzles that Teach Math and Problem-Solving Skills (тип: электронная)