Using scientific inquiry, readers will learn about two simple machines, the lever and pulley. Through everyday connections to science in the real world, see how making simple machines is easier than you think. Includes a note to caregivers, a glossary, a discover activity, and career connections, as well as connections to science history.

IScience puzzle --Discover activity -- What is a force? -- Connecting to history -- How are force, work, and energy related? -- How do levers affect forces? -- Science at work -- Pulley systems and how they affect forces -- Solve the iScience puzzle -- Beyond the puzzle.