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Motorboat Book
9-12 år
häftad,
2013,
Engelska,
ISBN 9781613744475
Using everything from electric motors, balloons, and gears to water jets, steam, chemical reactions, and even gravity, this clever handbook offers a variety of choices for …
Robotics Engineering
9-12 år
häftad,
2018,
Engelska,
ISBN 9781474740692
Have you always been fascinated with robots? Do you want to know how to build one yourself? Learn the basics from a real-life expert and get some hands-on experience. The world of …