Possible responses Answers vary. 3.2: Centimeters and Millimeters (10 minutes) Setup: Tell students, look at how centimeters and millimeters are related and how it is related to what we have been doing “Let's recently.” Student task statement There is a proportional relationship between any length measured in centimeters and the same length measured in millimeters. There are two ways of thinking about this proportional relationship. If you know the length of something in centimeters, you can calculate its length in millimeters. Complete the table. What is the constant of proportionality? row length length 1 (cm) (mm) row 9 2 row 12.5 3 row 50 4
Possible responses Answers vary. 3.2: Centimeters and Millimeters (10 minutes) Setup: Tell students, “Let's look at how centimeters and millimeters are related and how it is related to what we have been doing recently.” Student task statement There is a proportional relationship between any length measured in centimeters and the same length measured in millimeters. There are two ways of thinking about this proportional relationship. If you know the length of something in centimeters, you can calculate its length in millimeters. Complete the table. What is the constant of proportionality? row 1 length (cm) length (mm) row 2 9 row 3 12.5 row 4 50
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