TIME For Kids The Book of What: Everything Inventions presents kids 8-12 years old with answers to the kinds of intriguing questions that appeal to their sense of curiosity. Colorful graphics, spectacular photos and clear, engaging diagrams will help answer questions such as: What are some inventions made by kids? what is Kevlar? What is a geodesic dome? TIME For Kids The Book of What: Everything Inventions is a must-have book to satisfy the most curious of kids.