Mastering Logic & Math Problem Solving Workbook Classic Puzzles, Brainteasers, & Logic Activities To Improve Confidence In Solving Problems (Grades 69) By Terri Husted By Thriftbooks
The Original Area Mazes, Volume Two: 100 More Addictive Puzzles To Solve With Simple Math And Clever Logic! By Inaba, Naoki Murakami, Ryoichi By Experiment
Mastering Logic & Math Problem Solving Workbook Classic Puzzles, Brainteasers, & Logic Activities To Improve Confidence In Solving Problems (Grades 69) By Terri Husted By Thriftbooks
The Original Area Mazes, Volume Two: 100 More Addictive Puzzles To Solve With Simple Math And Clever Logic! By Inaba, Naoki Murakami, Ryoichi By Experiment