The purpose of this Warm-up is to elicit the idea of using a table to see patterns between related quantities, which will be useful when students discuss how to use tables to analyze proportional relationships in a later activity. While students may notice and wonder many things about these images, the relationships between the rows and the relationship between the columns are the important discussion points.

This prompt gives students opportunities to see and make use of structure (MP7). The specific structures they might notice are:

• Scale factors between any pair of rows (In other words, multiplying both values in one row by the same number gives the values in another row.)

• A unit rate between the two columns (For example, multiplying any value in the first column by 12 gives the corresponding number in the second column.)