questions, and, in cases of disagreement or confusion, reread the text. The discussion leader is responsible for summarizing and synthesizing the reading and discussion and clarifying the purpose of the reading. The leader also generates and solicits predictions about the upcoming text to prepare for meaningful reading of the next segment. The teacher must model the appropriate behavior and provide scaffolding to sustain the discussion. (The preceding description is taken from Palinscar & Klenk, 1992.) The students, then, are involved in the higher-level thinking and decision-making activities usually within the realm of the teacher. With the help of the teacher, students share a zone of proximal development where they can learn questioning, summarizing, clarifying, and predicting activities so integral to metacognitive awareness.