Why do things move, fly, tick, or explode? These 25 entertaining experiments help budding engineers find out! Explore the science behind construction, from how zip wires move to how marble runs work, with these hands-on experiments. Using easy-to-find objects and tools, each fun project—including a lolly bridge and a 10-second marble challenge—can be constructed at home. Every boldly illustrated experiment includes a “How It Works” explanation and a difficulty rating; budding engineers who feel confident of their skills can try the harder ones. Build It! is the perfect introduction to key STEM topics, and guaranteed to keep young hands and minds busy.

Be inspired! -- Motor and bulb circuits -- Rocking and Rolling: CD racer -- Balancing gymnasts -- Balloon buggy -- Marbe Maze -- Marble run -- Vibrating brush monster -- Making a Splash: Sailboat -- Cartesian diver -- Craft stick bridge -- Fan boat -- Speeding through the air: Teddy bear zip wire -- Stomp rocket -- Glider -- Catapault -- Handy at Home: Clocks -- Handheld fan -- Flashlight -- Making Light Work!: Coin battery -- Colored spinner -- Persicope -- Steady hand game -- Orbiting in space -- Program Me!: Controller set up -- Traffic lights -- Chair-o-plane -- Motorized car -- Glossary -- Index.