The document discusses effective questioning techniques for developing critical thinking skills in students. It provides examples of different types of questions teachers can ask, including essential questions, hypothetical questions, telling questions, planning questions, organizing questions, strategic questions, elaborating questions, probing questions, and clarifying questions. These questions can be used to engage students' thinking, promote reasoning, encourage speculation and hypothesis, and clarify understanding. The document also discusses using a series of questions in an "arc" to lead students to deeper understanding and having a toolbox of generic questions available for students.

1. Questioning and thinking Developing thinking and processing skills through questioning.

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33. Arc of questions