1. Divide students into small groups.
2. Students will go online to https://support.printm3d.com/145216-3D-Models and download the stiffness test models.
3. Each group should print one stiffness model in at least three different types of materials.
4. Once they have their models printed, students should clamp the flat end to a surface, and then add weights to the other end.
5. Students should measure how much weight it takes to move the model 1mm, 2mm, & 3mm.