# Lesson 12

Ways to Represent Measurement Situations

### Lesson Purpose

The purpose of this lesson is for students to make sense of situations involving measurements, interpret representations of the situations, and ask and answer questions about them.

### Lesson Narrative

In previous lessons, students estimated and measured weights and liquid volumes. They learned a variety of methods and representations to solve problems involving all four operations, and used representations that made sense to them.

In this lesson, students make sense of tape diagrams (MP2), which better represent the continuous nature of measurement contexts. The context of a fair is used in this lesson and subsequent ones.

• Engagement
• MLR8

Activity 1: Giant Pumpkin Event

### Learning Goals

Teacher Facing

• Interpret representations of situations involving measurements.

### Student Facing

• Let’s make sense of and represent measurement situations at the fair.

### Required Materials

Materials to Gather

Materials to Copy

• Card Sort: Giant Pumpkins

### Required Preparation

Activity 2:

• Create a set of cards from the blackline master for each group of 2.

Building Towards

### 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

How did you see students using their prior mathematical knowledge to solve problems involving the four operations in these new measurement contexts?

### Suggested Centers

• Number Puzzles: Addition and Subtraction (1–4), Stage 5: Within 1,000 (Supporting)
• Target Numbers (1–5), Stage 7: Subtract Hundreds, Tens, or Ones (Supporting)