While this lesson does a great job incorporating some social studies aspects (cross-curricular), I am not sure I would use the lesson as it is presented. I had difficulty working with the virtual simulation which resulted in frustration. I had to start over many times because the simulation would freeze or not render properly. I would probably modify the lesson to allow the students to use something like Microsoft Paint where they can edit pixel by pixel and use the tools built in. Granted it would not give them the function aspect, but the overall elements of symmetry would still be there.
This one would have been great to do properly in the in-person PD. We had a group try and present it, however we had limited connectivity with our computers so it did not work out as well as it could have.