What Makes It Go?

Budding engineers have great questions about the machines they see around them. They might wonder how a car engine works, how a motorcycle stays upright on the road, and why airplanes don't fall out of the sky! This colorful, inviting series is for the inquisitive reader who will love how complex concepts are explained clearly through insightful and at-level text and supporting images.

• Graphic organizers support and reinforce key ideas
• High-interest STEM subject matter will appeal to emerging readers
• Did You Know? fact boxes add more fun opportunities for knowledge building