# 3D Desmos Designs

About a month ago I wrote about how I use Desmos Des-man to introduce an algebra graphic art project. I have done this project for several years now, but this time, I added a special twist… After making a design in Desmos, the students used Creo Parametric to create models of their designs which they 3D printed!

Step 1: I taped four sheets of graph paper together so that students would have a large work area. They chose a theme and started drawing. The only requirements I gave: there had to be at least one image per group member with at least 8 equations (at least 2 quadratic and 2 absolute value) and 2 inequalities

Step 2: Students divided up the drawing and started determining the equations. Some students physically cut their image apart so they could work on it at home.

Step 3: Students took turns inputting their equations into one Desmos calculator. This took a bit of time since the students could not all be the same calculator at once. Most of the groups would save the Desmos image as a PDF to google drive, and then share that file with their group members.

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Step 4: All of my students take an Engineering class where they learn how to use Creo Parametric. I also took a PTC STEM Certificate Program this past semester where I learned the basics of 3D modeling. I had each student start with a basic rectangle and they uploaded their Desmos image to the rectangle. Then they traced the outline and extruded the lines. That’s it! Some students who are very comfortable with Creo decided to add special features and colors.

Step 5: I printed the designs using our Stratasys uPrint machine and the students created 3-Dimensional Displays to showcase their work.

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Some groups did not complete a 3-Dimensional Display, so I will be turning their designs into magnets!

My students were so engaged in this project and so proud of the models they created. It felt so natural to have them continue working with their Desmos designs and turn them into actual 3d prints. One aspect of the project that I didn’t stress with the students this year was the scale of their models. Next year I will have students determine a group scale, so that each component of the image fits together better.

I feel very lucky to have access to a 3D printer at school, and I will be looking for new ways to bring 3D printing to my students naturally. If you have any ideas, please share!

Update: I shared this project during Twitter Math Camp 2015. Here is a video of my presentation: