Clip 27/43: Standard 6: Attend to Precision Using Algebraic Equations Part 2A
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.
Disston engages his students in the second task of describing and categorizing symbol strings, saying “I want you to now sort the equations into different types—pull them into which equations are like other equations. What subgroups are there?” The students discuss and defend their thinking to each other and to the teacher.