BRAIN PUZZLES, by Usborne
Ages 6+ years
A variety of pocket-sized puzzle books designed to engage and challenge young minds. This Brain Puzzle Activity Books is perfect for travel on planes, trains, and automobiles.
Secret Codes: Put your code-cracking skills to the test with this entertaining book and learn how to disguise your own secret language.
Author: Emily Bone
ISBN-13: 9780794539672