My students love getting out of their seat! This activity allows them to get up, walk around the school (if you trust them enough) and review cell structures! I copy the student answer sheets at 85% so they can glue them in their lab (composition) notebooks. I teach at a small school, so my students are free to walk around the halls to answer the cards. I taught at a massive school prior to that, and had many of the behavior students, so I taped them in my classroom. They still get to get up and answer the questions.