Librería Samer Atenea
Kálamo Books
Librería Elías (Asturias)
Librería Kolima (Madrid)
Librería Proteo (Málaga)
Kids love to be challenged with puzzles, and this book does that as well as exposes them to math problems. Not only will they be learning, but they will have fun while doing so. Math no longer needs to be difficult with this exciting puzzle book; pick up a copy.