"Join the Maker, an alien who knows all about machines, and take a look at wedges. Readers will learn about different types of wedges and how they help make life on Earth easier"--
"Inquisitive makers will love learning about pulleys and how they work thanks to the Maker, a wacky alien with a passion for simple machines! A hands-on back matter activity adds to the fun"--
"A smart but silly alien companion and toy-making activity make learning about levers tons of fun! Readers can discover how levers work and the types of levers we see in our everyday lives"--
"What is a wheel, and why do we need it? Answer these questions and more in this title all about wheels. A project where readers make a toy car adds opportunity for hands-on learning!"--