The acronym CAD usually stands for Computer Aided Design. As an engineer I made plenty of CAD models for various projects. There is a much more important step in machine design that share the same acronym: Cardboard Aided Design. This means taking cardboard and tape and roughing out the chassis for the machine and making some basic decisnions about where the individual components go. Where does the battery mount? How will the motors attatch?
3rd graders at St. Raymond are following that same process. Before they learn to use a computer they explore machine design with cardboard. This semester we are going to explore some of the following cardboard techniques:
Here some of the 3rd grade class work in teams to figure out the best way to mount motors on a cardboard box project: