Gears & Worm Drives

Grey Duck Games & Toys Verified independent store

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Learn how Gears can easily reduce or increase speed, change force or transfer motion from one position to another Encourages understanding of movement in engineering, speed, force, physics theories 46-page booklet with theory, experimental activities, quiz and building instructions Full-color images, drawings and interesting facts Thought-provoking building challenges and exercises Provision to write, note results and draw conclusions Various gears of high precision for changing speed 12 working models to build: experimental crane, a gearbox, a carousel, a helicopter, a screw press and a crane with a rotating arm Models built one at a time with the same parts Recommended for ages 8-16+ Show more