Teacher resources and professional development across the curriculum

Teacher professional development and classroom resources across the curriculum

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Reasoning and ProofSession 04 OverviewTab atab btab ctab dtab eReference
Part A

Observing Student Reasoning and Proof
  Introduction | Inscribed Triangles | Problem Reflection #1 | Inscribed Triangle Continued | Problem Reflection #2 | Classroom Practice | Observe a Classroom | Your Journal


Think about the student work and reflect on the following questions. When you've formulated an answer to each question, select "Show Answer" to see our response.

Question: How did students justify their thinking?

Show Answer
Sample Answer:
Although in some cases, students were eager to continue to gather data to justify thinking, when prompted by other students or the teacher, they began to make general observations about angles and triangles to support their arguments.

Question: How do students show their understanding of reasoning and proof?

Show Answer
Sample Answer:
The students show how well they understand what is to be proven by how they organize their approach. Some students are better able to self-assess whether the path they are taking is useful. They used phrases like "getting close," which shows not only their growing understanding of reasoning, but also that they have a concept of what the proof that angle C is a right angle would look like.

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