Students take one or two minutes to work the problem individually. Teacher announces that it is time to huddle. Students huddle in teams and compare work and answers. If one does not understand, the team members help. Teacher calls time.
Students stop discussing.
Teacher spins student spinner. Students with that number stand without talking. Teacher spins team spinner and person standing in team gives their answer. If students standing in other teams agree with answer, they sit. If students standing in other teams disagree with answer, they stay standing.