Das große IQ- Trainingsbuch. Über 500 spannende und knifflige Denkspiele.: 9783577100625: Amazon.com: Books
Amazon.com: Learning Resources Mental Blox Go! 30 Games and Puzzles, Ages 5+ Educational Travel Games for Kids, Brain Teaser Games and Puzzles, STEM Games, 3-D Puzzles, Critical Thinking for Kids : Toys