The role of teachers, students, everyone has joined the activity. Group or pair is assigned responsibilities as learners. All the work that best suits their interests and abilities.
Teachers assign roles to all learners have attended the activity group or pair a delegation of responsibilities to learners. Manage all to work that suits their abilities and interests.
Teachers roles for all students have joined the activity, group or pair is assigned the responsibility for the learners. Managed to get everyone to work that suits the ability and their interest.