Playing Tug-of-War, pedaling a bike, jumping rope - these actions all require force! We typically don't notice most of the forces around us, but they surround us all the time. Find out how force works, and then harness your knowledge to design and build like an engineer! Third-grade students will enjoy learning about inertia, tension and gravity, lift and air resistance, electric and magnetic forces, combined forces, and more through this high-interest informational text filled with vibrant photographs. Aligned to the Next Generation Science Standards, a hands-on "Think Like a Scientist" lab activity is included at the end of this e-book to provide students with an opportunity to apply what they've learned in the text. Helpful diagrams and text features, such as a glossary and index, are also included to improve content-area literacy and support STEM instruction.