Clip 42/43: Standard 6: Attend to Precision Graphing Quadratics Part 5
Overview
Mathematically proficient students try to communicate precisely to others. They try to use clear definitions in discussion with others and in their own reasoning...they have learned to examine claims and make explicit use of definitions.
In this clip, Carlos Cabana's students work in groups with confidence; in his commentary he observes that the students are evidencing strengths that they had developed over time. Students advance each others' thinking and give each other encouragement to back up their reasoning.