Clip 22/43: Standard 6: Attend to Precision Using Rates Part 1
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 are careful about specifying units of measure.. They calculate accurately and efficiently, express numerical answers with a degree of precision appropriate for the problem context.. By the time they reach high school they have learned to examine claims and make explicit use of definitions.
Joe Condon works with his 6th grade students to identify strategies for comparing unit rates. In these clips, he reads a definition of rate developed and expanded by the class over the two-week period, then engages the students in a lesson testing out strategies for calculating unit rate.