This book is part of a book series called Optical Illusions .

This book has been graded for interest at 7-11 years.

There are 24 pages in this book. This book was published 2019 by Qeb Publishing -- Quarto Library .

Gianni A. Sarcone and Marie-Jo Waeber are co-founders of Archimedes' Laboratory. They invent, create and develop interactive thinking games and optical illusions. Gianni A. Sarcone and Marie-Jo Waeber are co-founders of Archimedes' Laboratory, an Italian-based training and consulting network of game designers that specialises in developing creativity. They invent, create and develop interactive thinking games and optical illusions. TBC