Title: Erno Rubik and His Magic Cube, Author: Kerry Aradhya
Title: Brain Games for 8 Year Olds: Fun and Challenging Brain Teasers, Logic Puzzles, and More for Gritty Kids, Author: Gareth Moore
Title: Brain Games for 10 Year Olds: Fun and Challenging Brain Teasers, Logic Puzzles, and More for Gritty Kids, Author: Gareth Moore
Title: Brain Games for 9 Year Olds: Fun and Challenging Brain Teasers, Logic Puzzles, and More for Gritty Kids, Author: Gareth Moore