Contemporary Brainteasers Contemporary Brainteasers
2017年
The Big Brain Puzzle Book The Big Brain Puzzle Book
2016年
Challenging Math Problems Challenging Math Problems
2015年
The Pocket Book of Frame Games The Pocket Book of Frame Games
2006年
Math Puzzles and Brainteasers, Grades 6-8 Math Puzzles and Brainteasers, Grades 6-8
2009年
Math Puzzles and Brainteasers, Grades 3-5 Math Puzzles and Brainteasers, Grades 3-5
2009年