Who invented concrete? How can airplanes land on water? 150 simple and concise Q&As for children interested in understanding scientific mysteries!

With these encyclopedias, children will develop their knowledge of several broad themes and learn a multitude of things about the world around them. The question-and-answer format of these books that has the Tell Me Why series a hit allows children to organize their reading as they see fit. At the end of the book, children will find fun games corresponding with each of its 6 chapters, as well as a glossary that will encourage a deeper engagement with the text. The series now includes 5 titles.