Engino Discovering STEM Mechanics Cams & Cranks | 8 Working Models | Illustrated Instruction Manual | Theory & Facts | Experimental Activities | STEM Construction Kit Engino brings complex concepts into clear focus for budding engineers and Scientists with award winning components and step by step illustrated assembly instructions Learn about transmitting power using Cams and cranks and converting reciprocal linear motion Build 8 working models such as a sewing machine, flapping Eagle, stationary crane, and more Includes 10 pages of theory and facts, a 2 page quiz, 3 pages of experimental activities illustrating uses of Cams and cranks, 15 pages of step by step, 3D rendered illustrations Models illustrated online at Engino website or using the Engino 3D app downloadable free for Android or Apple iOS. Made in CYPRUS Designed and made in CYPRUS - no batteries required