Brainteasers And Riddles For Gritty Kids: 300 Difficult Mindbending Lateral Thinking, Logic, And Math Puzzles For Kids And Families 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