Ever wondered how roller coasters work? Been fascinated with nuts, bolts, screwdrivers, batteries, switches, wires and bulbs? Get acquainted with these movers and shakers of the world of gadgetry around us . . . and become a Junior Inventor yourself ! Put together by Cloud Mentor, a company that mentors kids to become budding inventors, this fun book is specifically designed for today's readers and suggests tons of activities to keep them happily occupied. Featuring almost every conceivable topic of interest—from machines, circuits, kitchen innovations to design basics—this incredible book helps children unleash their creativity and their innovative best.