Standard 2: Reason Abstractly & Quantitatively
Clip 6/13: Standard 2: Reason Abstractly & Quantitatively Using Proportions & Ratios Part 1
Mathematically proficient students bring the ability to contextualize, to pause as needed during the manipulation process in order to probe into the referents for the symbols involved.
Hillary Lewis-Wolfsen leads a re-engagement lesson on the proportions and ratios, helping students to recognize what a visual representation of a simplified fraction looks like. In this clip, she gives her students “think time” to jot down their ideas, then responds to a student with the correct answer by asking another student to explain her answer. Lewis-Wolfsen comments that her “students often understand more if they hear the explanation in a variety of ways, and not just from the teacher.”