A really inspirational read with good mixture of photos, text, and broad overview of the subject -- Parent with child age 6 * Toppsta * Both my 5 and 8 year old liked the variety of pages... full of really interesting facts & photos, and would make an excellent addition to any classroom or home library. Highly recommend -- Parent with children ages 8 and 5 * Toppsta * This book is full of interesting facts that certainly captured my sons interest... Very good book which will be read over again -- Parent with child age 8 * Toppsta * An amazing book... There is so much to learn from this book and we really loved reading it -- Parent with child age 7 * Toppsta * This book is for anyone who likes reading about science and facts -- Child age 10 * Toppsta * My son really likes this book. Each page is bold and full of information, perfect for any budding engineer who loves inventions -- Parent with child age 7 * Toppsta * A really informative engineering book that is a great read to use with my daughter's school work it came in really handy -- Parent with child age 9 * Toppsta *