What makes the lights in your house turn on? What powers your phone, tablet, and other devices? Readers will learn all about the principles of electricity by building their own circuits to construct e
Easy-to-follow instructions help kids discover how to make a giant bubble maker, a hovercraft, and a catapult. Readers will also learn about evaporation, air pressure, and how levers workand meet some
Easy-to-follow instructions help kids discover how to make a drawbot, a robotic hand, and a robotic arm. Readers will also learn about vibration, opposable thumbs, and tensionand meet some robotics pi
Easy-to-follow instructions help kids discover how to make a spinning top, a mountain climber, and a balloon car. Readers will also learn about friction, force, and energyand meet some motion pioneers
