I've been playing with new ideas of what I can use with students. These 3D cookie cutters intrigued me. I found the idea on Thingiverse and wanted to try it. The first two images are from Thingiverse. The blue images and broken pieces are my version. Even though it didn't turn out on the first try, it was fun to try. Now I'm back to the drawing board to think about how to make these work.
Lesson Learned: When students choose to not engage, as a teacher you need to know when to stop the lesson.