The Forge uses a number of products to accomplish 3D design.

Morphi is fun to use and is for anyone who wants to design + print in 3D or design in 3D for other purposes like graphic design or basic animation. The app is ideal for school programmes. Morphi currently works on iPad and iPad mini. However other versions are planned. The basic app is free but a fully featured version is available and special purchase deals are available. Keep looking at this product as they will be offering teacher resources and projects. Company website      Tutorial

TinkerCad is an easy, browser-based 3D design and modeling tool for all. Tinkercad allows users to imagine anything and then design it in minutes. Company Website        Tutorial