Average Reviews:
(More customer reviews)This is a great concept for a toy but the execution leaves a lot to be desired. The models to illustrate the concept of gears quite well. Unfortunately, some of the models just don't work very well, if at all.
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Learn how gears can easily reduce or increase speed, change Force, or transfer motion from one position to another. Build 6 working models, a gearbox, a hand drill, an egg beater, a helicopter, a rotating sign post and a high speed fan. A 36 page activity book is included with innovative experiments and detailed explanation of the different technological principles applied! Booklet with detailed building instructions also included.
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