# Lesson 9

Order Decimals

### Lesson Purpose

The purpose of this lesson is for students to order decimals.

### Lesson Narrative

The purpose of this lesson is for students to apply their understanding of decimal place value to list a set of decimal numbers in increasing size. Some students may wish to use a number line to help locate the numbers. Students who choose to use the number lines have the interesting task of figuring out which numbers to put at the ends of their number line, which will require thinking carefully about place value and the size of the numbers they are locating (MP6).
• Engagement
• MLR1

### Learning Goals

Teacher Facing

• Order decimals within the thousandths place.

### Student Facing

• Let's put decimals in order.

### Lesson Timeline

 Warm-up 10 min Activity 1 20 min Activity 2 15 min Lesson Synthesis 10 min Cool-down 5 min

### Teacher Reflection Questions

Identify who has been sharing their ideas in class lately.  Make a note of students whose ideas have not been shared and look for an opportunity for them to share their thinking in tomorrow’s lesson.

### Suggested Centers

• Greatest of Them All (1–5), Stage 4: Decimals (Addressing)

### Print Formatted Materials

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