Bicycles

Bicycle are compound machines with many different systems that work in parallel. We can separate the machines that make up a bicycle into:

  • the drive train (a complex machine)
  • the braking system (a complex machine);
  • a bicycle frame (a simple machine and a wonder of geometry).

An activity I play with my classes is to ask students, taking turns and drawing one line at a time, to convert the imagery below into a bicycle:

Screen Shot 2017-08-24 at 12.18.39 AM

Btw, someone I work with recommended I read this and that on bicycle drawings.

Class/group drawings have yielded the following:

IMG_8267

 

IMG_6815

IMG_7753

IMG_6683

IMG_8406.JPG