Power of Two-Team Teaching in PreK Unified Classrooms. "It's like a marriage!" Watch this team masterfully plan small group instruction. Two teachers each work with a small group, while students work independently in two additional small groups. It's amazing to see such independence from 4 year olds!! Teachers are able to facilitate on-going assessment and respond with differentiation when utilizing a 1:5 teacher: student ratio. Stations last 10-12 minutes. By the end of the week, student will have rotated through all 4-5 learning stations.