I teach 6th grade science and have used stations successfully in the past, however with my larger class sizes (from 18 in the past to 33 now), I have found them to be less effective. I have used stations for minerals/rocks, erosion, botany, light/energy, and physical/chemical reactions. The kids really like them and with the discussion questions found in each station, the depth of the kids answers increased because of the conversations they had amongst themselves while participating in each activity found at each station. I enjoyed them, but the large numbers of students in labs, that have not gotten bigger with the increase in students, does not allow equal access for all of the students to see or participate in the activities. So, I find myself using them less and less.