Are you ready to unlock mysterious ciphers and Morse code puzzles? To meet new friends and assist them in mentally stimulating code-breaking? To activate your exploration and thinking skills like famous detectives? This book contains numerous challenges to engage and challenge children to think outside the box. It offers a lot of fun and can be utilized in some home activities or even in the classroom. Product Code: 9789923120507 Weight: 275 grams Dimensions: 26 cm * 22 cm Pages: 99 Year of Publication: 2022