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basic machines and how they work

Simple Machines for Kids: Science and Engineering for Children - FreeSchool https://patreon.com/freeschool - Help support more content like this! Simple machines have been helping people to do work forĀ ...

Pulley, Wheel, Lever and More Simple Machines - Science for Kids | Educational Videos by Mocomi https://mocomi.com/ presents:Pulley, Wheel, Lever and More