In the previous lesson students compared decimals using a strategy that made sense to them with a focus on developing place value understanding to include thousandths. In this lesson, students use the number line to locate decimals to the thousandth. They continue to use their place value understanding as they label tick marks representing tenths, hundredths, and thousandths (MP7). They also see that the number line can be used to compare decimals just like it was used to compare whole numbers in earlier grades. Students also consider which number line is best for locating different decimals.

Reflecting on the students’ work today, who participated in math class today? What assumptions are you making about those who did not participate? How can you leverage each of your students’ ideas to support them in being seen and heard in tomorrow’s math class?