Mind Benders Level 5 Workbook, Deductive Thinking Skills Puzzles (Grades 7+)

Mind Benders Level 7 Workbook, Deductive Thinking Skills Puzzles (Grades 7+)

Mind Benders Level 6 Workbook, Deductive Thinking Skills Puzzles (Grades 7+)

Mind Benders Level 8 Workbook, Deductive Thinking Skills Puzzles (Grades 7+)

Mind Benders Level 3 Workbook, Deductive Thinking Skills Puzzles (Grades 3-6)

MindWare Brainteaser Books Perplexors & Deducibles Logic Puzzles - Levels B & C

Mind Benders Level 1 Workbook, Deductive Thinking Skills Puzzles (Grades PreK-K)

Math Perplexors Basic Level - Builds Logic Skills - 50 Problems Ages 6 and up