What is an axle, and how does it work with a wheel? Readers are introduced to this STEM concept through clear and accessible main text, which encourages curiosity. The workings of a wheel and axle is an essential physical science curriculum topic, and it is presented to readers in a creative and relatable way that is meant to appeal to budding scientists and mechanics while also engaging developing readers. In addition, helpful diagrams, informative fact boxes, and vibrant, full-color photographs enhance this exciting reading experience.