Finding Evidence, Justifying Strategies: Teacher Patty Ferrant works with her students to find evidence and justify strategies, usually using students’ own work samples as prompts.
She challenges her students to use two different approaches, identify which approach they agree with and why, and explain how they can use a focus strategy to prove it.
How does Patty get her students to describe their ways of solving to each other?
These videos are discussed in the Inside Mathematics guide "Making Sense of One’s Own and Others’ Learning, Patty Ferrant, 8th Grade," one of 10 practice-focused guides on building classroom climates for mathematical learning.
The videos document key mathematical practices observed in teacher Patty Ferrant's 8th-grade classroom over the course of a school year. In the guide (available as a PDF or an iBook download), you can explore extended narratives and questions for reflection around "making sense of one’s own and others’ learning."
Day 5: Students identify needs and norms for constructive partner and group work [Explaining Thinking]
Day 5: Sharing understanding (or lack thereof) with partner talk [Understanding and Reading Problems]
Day 5: Partner share for describing and justifying strategies [Finding Evidence, Justifying Strategies]
Day 118: Students present, defend, and critique their own and others’ evidence and strategies [Finding Evidence, Justifying Strategies]