Libri

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