Is there a more fun thing that spills out of your mouth from geometry? I told my students that part of their homework was to repeat "CPCTC" 5,000 times correctly, and if they messed up, they had to start back at 1 (same for the whole phrase "corresponding parts of ...").
Anyway, this went well. I had them complete part of the following sheet in class JUST for proving the triangles congruent, so what three facts did they need to know and could they deduce from the picture to prove WHICH triangles congruent AND by what theorem/postulate. We did 1 together, then they did 2 on their own and we talked. Then 4 and 5 similarly (because they have special issues the kids come up against). I partly liked this sheet because it forced them to think about what they needed to use the theorems. They also messed up on #4 and claimed angle S congruent to angle S, so we had a discussion on naming conventions. They also messed up on #5 and put that angle W congruent to angle Y instead of claiming that the triangles were right. We discussed why the change/need and how ultimately you could just assume the triangles are right from the diagram.
Then I asked what extra things could they figure out BECAUSE they knew the triangles were congruent AND WHY. Then, in the white space on the right, we drew the 3 arrows from the triangle congruence statement to the 3 extra things we knew (flow proof style). They were fine with #1, and then some messed up with #2 because they were on autopilot and just put the 3 sets of angles were congruent (just like #1). We discussed how that's not NEW information and fixed it. Then I had them guess what reason we might claim. We finally got around to CPCTC. They finished the rest for homework.
Here's the sheet we worked on: