Name Of Part: Beam; Name Of The Part: Wheels - LEGO Education WebDo 2.0 Toolbox Manual

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Name of Part: Beam

A beam attached to a rotating part will become a piston. A piston is a moving
component of a machine, transferring the energy created by the motor into an
up/down or forward/backward motion. The piston can push, pull, or drive other
mechanical elements of the same machine.
For example, used in these Design Library base models:
Crank

Name of the Part: Wheels

It's a circular element that rotates on an axis to produce propelled movement.
For example, used in these Design Library base models:
Wobble, Drive, Steer
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