250 best puzzles for boys

This book will help you not only have fun, but also spend time with benefit. There are so many interesting things here: the secrets of detective business from the famous Sherlock Holmes, fascinating scientific experiments, exciting stories about pirates, Vikings and dragons, instructions for the manufacture of simple, but also useful crafts, and most importantly - many puzzles, cunning tasks, confusing labyrinths and other entertaining entertainers tasks. Leafing through the pages of the book, you will learn a lot of new things, you can "pump your brain, develop logical thinking, memory, attentiveness and even deductive abilities. And at the same time, believe me, it will not be boring!
for secondary school age