101 Math Puzzles, Riddles, And Brain Teasers For Kids (Ages 10+): The Ultimate Collection Of Ridiculously Fun Math Activities By Mashup Math By Thriftbooks
100 Math Brainteasers (Grade 7, 8, 9, 10). Arithmetic, Algebra And Geometry Brain Teasers, Puzzles, Games And Problems With Solutions: Math Olympiad C By Dyda, Bartholomew Romanowicz, Zbigniew By Tom Emusic
Logic Workbook For Gritty Kids: Spatial Reasoning, Math Puzzles, Word Games, Logic Problems, Activities, Twoplayer Games. (The Gritty Little Lamb Com By Allbaugh, Dan By Thriftbooks
Another Logic Workbook For Gritty Kids: Spatial Reasoning, Math Puzzles, Word Games, Logic Problems, Focus Activities, Twoplayer Games. (Develop Prob By Allbaugh, Dan By Thriftbooks
101 Math Puzzles, Riddles, And Brain Teasers For Kids (Ages 10+): The Ultimate Collection Of Ridiculously Fun Math Activities By Mashup Math By Thriftbooks