Clip 19/41: Standard 3: Construct Arguments & Critiques Using Decimals Day 2G
Overview
Mathematically proficient students….are able to analyze situations by breaking them into cases, and can recognize and use counterexamples. They justify their conclusions, communicate them to others, and respond to the arguments of others.
Erika Isomura connects her students’ thinking back to the previous lesson with fractional lengths of strings. Erika closes the lesson by praising students’ perseverance and the value of mistakes —“We like mistakes because they give us something to learn from…think of this as your prototype, this is our test run, we're trying it out, once we learn a little bit more, once we become more experts we can always go back and make some changes.” This clip also relates to standard 1 (make sense of problems and persevere in solving them).