Books with title The UFO Investigator's Handbook

Create a self-propelled vehicle, a flying machine, and a timekeeper -- five different inventions in all! The kit includes everything a kid needs to create incredible machines -- electric motor, propeller, gears, and much more. Explore some of the great inventions by kids and adults in The Inventor's Handbook, then invent your own! Conceived by Boston's Museum of Science, this kit is kid-tested and scientist-approved.