The Wondrous Workings of Planet Earth Puzzle: Ecosystems of the World 500-Piece Jigsaw Puzzle and Poster : Jigsaw Puzzles for Adults and Jigsaw Puzzles for Kids

Activity Puzzle Brain Teaser For Kids Ages 12-14 Years Old: Challenging Fun Brain Teasers and Logic Puzzles For Clever Kids includes Word search, Sudoku, Crossword Number Place And More

Balance Benders: Logic and Algebraic Reasoning Puzzles, Level 3 (Grades 8-12+) by Robert Femiano (2010) Paperback

Codes: How to Make Them and Break Them!

Fabulous Decades Large Print Word Search: Relaxing Big Font Wordfind Puzzles about Memorable Events of the 50s, 60s, 70s, and 80s for Stress Relief (Wordsearch Book)

Brain Boggling Puzzles for Smart Kids: 101+ fun and challenging activities. Logic puzzles, word games, mazes, Sudoku, brain teasers, and much more! For ages 8 and up

Riddles in Mathematics: A Book of Paradoxes (Dover Math Games & Puzzles)

Large Print Anxiety Relief Word Search Puzzle for Adults: Relaxing Word Find Activity Book for Adults, Teens and Seniors with Positive Big Words To Help Relax, Soothe Anxiety and Find Inner Calm

I'm bored ! What can I do ?: Fun activity book for teens 12-17: word search, quiz, mazes, sudoku, mandala coloring, blank comic book for boys and ... Puzzles games, brain teasers for teenagers

Samurai Sudoku Puzzle Book: 500 Hard Puzzles overlapping into 100 Samurai Style