I was going through old classroom photos and found one of my favorite bulletin boards! The flip flop challenge tasks were a hit with students. I used this for higher-level thinking tasks that related to ELA or Science. It served as an “enrichment” station for my students and had activities for students of ranging abilities. It worked well for keeping kids on-task after they finished a lab early or while I did reading or science notebook conferences with individual students. I think I’m going to have to dust this off for my class this year!