We are planning to start a basic course on Computer Aided Designs (2D and 2D) for high school kids.
The idea is to help them shape their innovative ideas into something tangible. We shall finally help them develop prototype using 3D printers or mass produce later on.
We would like to know what all open source options are available for 2d and 3d designs. Most importantly we are looking for tools which are simple and easy enough so that high school students can use it (we will be limiting to simple designs).
Any suggestions ?