Promotion
Shop now and save 20% on your back-to-school purchases & get free shipping on orders $45+ Use code: SCHOOL24
By clicking ‘Sign Up,’ I acknowledge that I have read and agree to Hachette Book Group’s Privacy Policy and Terms of Use
By the Author
![Tools](https://www.hachettebookgroup.com/wp-content/uploads/2023/11/9780762498307.jpg?w=190)
Tools
![Engines](https://www.hachettebookgroup.com/wp-content/uploads/2022/05/9780762498345-1.jpg?w=190)
Engines
![How Things Work](https://www.hachettebookgroup.com/wp-content/uploads/2022/05/9780316445443.jpg?w=190)
How Things Work
![Reactions](https://www.hachettebookgroup.com/wp-content/uploads/2020/10/9780762497362.jpg?w=190)
Reactions
![The Kid's Book of the Elements](https://www.hachettebookgroup.com/wp-content/uploads/2020/10/9780762470785.jpg?w=190)
The Kid's Book of the Elements
![Theodore Gray's ABC Elements](https://www.hachettebookgroup.com/wp-content/uploads/2019/08/9780762467013-1.jpg?w=190)
Theodore Gray's ABC Elements
![Theodore Gray's My First Elements](https://www.hachettebookgroup.com/wp-content/uploads/2019/08/9780762494323-1.jpg?w=190)
Theodore Gray's My First Elements
![Molecules](https://www.hachettebookgroup.com/wp-content/uploads/2018/03/9780316480581.jpg?w=190)
Molecules
![Theodore Gray's Completely Mad Science](https://www.hachettebookgroup.com/wp-content/uploads/2017/06/9780316395083.jpg?w=190)
Theodore Gray's Completely Mad Science
![Elements Puzzle](https://www.hachettebookgroup.com/wp-content/uploads/2017/06/9781579128883.jpg?w=190)
Elements Puzzle
![Theo Gray's Mad Science](https://www.hachettebookgroup.com/wp-content/uploads/2017/06/9781579128753.jpg?w=190)
Theo Gray's Mad Science
![Photographic Card Deck of The Elements](https://www.hachettebookgroup.com/wp-content/uploads/2017/06/9781603761987.jpg?w=190)
Photographic Card Deck of The Elements