Screws are everywhere! From the cap on a bottle to a farmer's combine, screws help us lift, grip, squeeze, and move. Come inside the book to learn all about this fascinating simple machine. More →

Simple machines are all around children: bicycle wheels, doorstops, the seesaw on the playground. This captivating series from Crabtree opens young readers' eyes to the essential everyday… More →

Wedges are used to separate, lift, or hold things in place. One of humankind's most ancient tools, the wedge has a place in almost everyone's daily life. Learn more in this absorbing new title. More →

Read all about wheels and axles and their many uses in this new book. Children will be thrilled to learn of their many uses, from doorknobs to the insides of a clock. There are wheels that… More →

This entertaining book introduces readers to basic computer game design. Content covers key game features including game assets, such as characters, obstacles, and tools. Readers also learn… More →

From the war-time success of deciphering the German Enigma machine right up to modern-day computer hackers, the exciting history of code-breaking is explored. More →

Engineers know that there is always more than one possible solution to a problem! This interesting title uses accessible text and relatable examples to explain how engineers test and compare… More →

This awesome book will show you how to up your JavaScript skills to code exciting new games. Originally used to make web pages more interactive, JavaScript can also be used to create online… More →

Learn how to code your own fun games using JavaScript in this easy-to-understand book. Originally used to make web pages more interactive, JavaScript is now used to create online games that… More →

In this exciting book, you will learn how to create your own amazing apps using App Inventor! You will find out how to connect up your computer to an Android phone or emulator. Then you'll… More →