A large book of best experiments, puzzles and logical games on vacation

The holidays are intended primarily for relaxation. And better, of course, if it is active. But at this time it would be nice to engage in the development of your own abilities. And this does not mean at all that you need to sit down at home and do all sorts of boring things, because you can very interestingly develop logic, attention and intelligence. The main thing is to know how! This book contains the best logical games, puzzles, Sudoku and even deductive tasks from Sherlock Holmes himself. If you have a member of this lesson, you can know the world around us and study scientific laws in practice, fulfilling simple, but fascinating experiments. And if you want to relax, you will have a great time, finding the right path in tangled mazes and looking for hidden pictures and words.
Get the vacation fun and with benefit!
for secondary school age