This book from the series 'Knowledge Crosswords' is aimed at children who have completed the 5th grade and was created for them to spend their free time pleasantly and creatively. Through exciting texts and entertaining crosswords, interesting information is provided about: mythology, sciences, arts, ecology, history, technology, culture, the world of animals and plants. (...) At the end of the book, there are detailed answers to all the exercises, so that the child is left with no questions or doubts. (...) [Excerpt from the text on the back cover of the edition]