Title: The Number Devil: A Mathematical Adventure, Author: Hans Magnus Enzensberger
Title: Math Games for Middle School: Challenges and Skill-Builders for Students at Every Level, Author: Mario Salvadori
Title: Puzzle Baron's Picture Puzzles: 100 all-color puzzles for everyone, Author: Puzzle Baron
Title: Hand Shadows and More Hand Shadows, Author: Henry Bursill
Title: Child's Play 6 - 12: 160 Instant Activities, Crafts, and Science Projects for Grade Schoolers, Author: Leslie Hamilton
Title: The Art of Hand Shadows, Author: Albert Almoznino
Title: Well Played, Grades 3-5: Building Mathematical Thinking Through Number Games and Puzzles / Edition 1, Author: Linda Dacey
Title: Engage the Brain: Games, Language Arts, Grades 6-8, Author: Marcia L. Tate
Title: Roblox, el libro definitivo / The Ultimate Roblox Book: Guia Extraofficial / an Unofficial Guide, Author: David Jagneaux