At the last math club I asked the students to bring me some of their math work so I can get some samples. That was a problem. Too many teachers either DON'T ASSIGN work that students can produce or THEY COLLECT IT and don't hand them back to the students. I feel that is definitely an area ALL teachers need to improve upon. Provide multiple opportunities for students to showcase their knowledge and when they turn it in to you....GIVE IT BACK TO THEM once you grade it. So that way, math club sponsors like me can have something to photograph!