I did this activity with my geometry class.
We’re going to tie it to proofs and induction and deduction. It was crazy fun. No group got it, but all the groups did the things that happened in the video. When we watched the debrief video, kids were hanging on to every word. I paused it after they had some more evidence from the video, and two kids had figured out the rule. Then we finished watching it, and they were confirmed right.