Sharma, Rajni MATH RIDDLES & BRAIN GAMES FOR SUPER KIDS: 250+ Fun Puzzles, Logic Challenges, and Number Activities to Boost Early Math Skills & Confidence ("Mind Masters: Kids’ Math Puzzle Series)

Sharma, Rajni 400 Advanced Math Riddles for Kids Ages 10-12: Brain-Boosting Puzzles, Logic Games & Problem-Solving Challenges for Grades 5-6 (Math Riddles Books ... ("Mind Masters: Kids’ Math Puzzle Series)

Smith, Stasia Activity Book for Kids Ages 6-8: 100 Logic Puzzles and Activities for Kids 6-8 Years Old. Over 20 Types of Fun Brain Games Riddles, Math Challenges, ... and More! (Activity Series for Curious Kids)

Editions, SanyaFun Riddles and Logic Puzzles for Curious Kids: Creative Brain Teasers and Fun Challenges to Stretch Young Minds : Logic Games, Sudoku, Quiz, Mazes ..., + Solutions Perfect For Boredom-Free Days of Fun.

PopSmart Books 101 Math Riddles for Teens: The Ultimate Mix of Fun Puzzles, Brain Games and Logic Challenges Full Color Teen Puzzle Activity Book Gift for Boys & Girls With Answers

Sparkle Super Fun Activity Book for Smart Boys: 100+ Mind Games, Logic Puzzles, Riddles & Brain Teasers (Screen Free Activities for Clever Kids 8-12)

PopSmart Books 101 Math Riddles for Teens: The Ultimate Mix of Fun Puzzles, Brain Games and Logic Challenges Full Color Teen Puzzle Activity Book Gift for Boys & Girls With Answers