In this lesson, students work with equivalent ratios more abstractly, both in the context of recipes and by using numbers without a context. They learn and articulate that all ratios that are equivalent to can be generated by multiplying both and by the same number.

As they connect concrete quantitative experiences to abstract representations, students develop their skills in reasoning abstractly and quantitatively (MP2). They continue to use diagrams, words, or a combination of both for their explanations.

Today’s activity is for students to individually reflect on the norms generated so far. During the Cool-down, students provide feedback on the norms, sharing those they agree with and those they feel need revision or removal. These suggestions will inform the next version of the classroom norms.