A couple of weeks ago I stumbled on a #makered Twitter chat and somehow the conversation turned to using the Sphero robots to paint. I was hoping to do this with my 4th graders because we are studying mathematical art and I thought it would be a good way to tie it in with the programming they have learned – but I had no idea how to go about it.
My colleagues on Twitter immediately offered fabulous suggestions: use tempera paint, try it with the “nubby” to give it texture, and buy a cheap plastic swimming pool to contain the mess. One teacher offered to try it the next day with her students and, as promised, sent me pictures of the results. Claire (@pritchclaire) also gave me the suggestion to stay away from red paint as it kind of stains the Sphero.
After receiving all of this great advice, I introduced the topic to my 4th graders. Then we set about coming up with a plan. First, they learned how to program the Sphero to make polygons using the Macrolab app. (We used the free 2D Geometry lesson from Sphero offered on this page.) There is an app that allows you to drive the Sphero free-hand, but it’s difficult to make exact shapes that way. Macrolab gave us the tools to be more precise.
The students needed a good 90 minutes to practice making different polygons. The next step was to sketch a design. I absolutely loved listening to the conversations about the math involved as they tried to figure out the angle degrees for each command. Despite their experience with the complexities of Sphero programming, the students started out with grand, complicated sketches. After doing dry runs, however, they realized they needed to scale things down a bit. Sketching and practicing took about another 90 minutes.
After many practices, each group came to our improvised drawing board. Although I loved the plastic pool idea, I realized that the bottom wouldn’t be flat enough to keep the Sphero in control. I brought a piece of drywall to school that had been sitting in our garage. We used some extra cardboard to add some sides to it.
With disposable gloves on, the students manually rolled the Sphero around in a puddle of paint, then set it up on the “canvas” and started their program. I should mention here that I was describing my day to my husband and he said, “You should have just put the paint in a plastic baggie and rolled the Sphero in that.” Hopefully I will remember that idea next year…
As you can see, the results of using a programmed Sphero were a bit different than the above photo. Personally, either method looks fabulous to me. The students agreed. As soon as they were done, one of them immediately said, “We should find out if we can hang these in the front foyer!”
Can you identify when they used the nubby for their lines?
You can see some video of our “technique” below.
After the experience we got into some good discussions about what art is and why the Sphero might not have always acted according to their expectations. Although this probably isn’t a lesson that could happen in the regular classroom due to time and equipment constraints, I think it worked well for my little group of 6 students!