Tinkercad is by far the easiest 3D modeling tool available. It is entirely based in the cloud and can be accessed from anywhere that you have an Internet connection. In Tinkercad, you combine shapes to create three dimensional objects. TinkerCAD is a simplified CAD program that can be used to design things for fun or for 3D printing and laser cutting. This program will be used in 6th, 7th, and 8th grades.