When a toy car rolls or a boulder falls, it's force that makes them move. But what is force and how does it work? There are forces at work whenever you throw a ball, run up the stairs, or push your big brother off the couch. Want to learn more about the forces around you? Read and find out!

This clear and appealing science book for early elementary age kids, both at home and in the classroom, uses simple, fun language, easy-to-understand examples, and cartoon-like art to make basic physics concepts understandable and fun. This book also includes a kid-friendly experiment in friction.

This is a Level 2 Let's-Read-and-Find-Out, which means the book explores more challenging concepts for children in the primary grades. The 100+ titles in this leading nonfiction series are:

• hands-on and visual
• acclaimed and trusted
• great for classrooms

Top 10 reasons to love LRFOs:

• Entertain and educate at the same time
• Have appealing, child-centered topics
• Developmentally appropriate for emerging readers
• Focused; answering questions instead of using survey approach
• Employ engaging picture book quality illustrations
• Use simple charts and graphics to improve visual literacy skills
• Feature hands-on activities to engage young scientists
• Meet national science education standards
• Written/illustrated by award-winning authors/illustrators & vetted by an expert in the field
• Over 130 titles in print, meeting a wide range of kids' scientific interests

Books in this series support the Common Core Learning Standards, Next Generation Science Standards, and the Science, Technology, Engineering, and Math (STEM) standards. Let's-Read-and-Find-Out is the winner of the American Association for the Advancement of Science/Subaru Science Books & Films Prize for Outstanding Science Series.