# Lesson 8

Filling up the World's Largest Wagon

### Lesson Purpose

The purpose of this lesson is for students to solve problems involving volume. Students multiply and divide multi-digit whole numbers using the algorithms learned in the previous sections.

### Lesson Narrative

The purpose of this lesson is for students to solve problems about filling the world’s largest toy wagon. In the previous lesson students estimated the volume of the Radio Flyer using information from an image. In this lesson, students are given the dimensions of the wagon and they calculate its volume as the first step in solving problems about how many bags of sand and how many boxes of a given dimension it takes to fill the wagon. Students use what they have learned about volume, the standard algorithm for multiplication, and partial quotients to solve these problems.

• Representation
• MLR8

### Learning Goals

Teacher Facing

• Multiply and divide multi-digit whole numbers.
• Solve problems involving volume.

### Student Facing

• Let’s solve more problems about volume.

### Lesson Timeline

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

### Teacher Reflection Questions

How effective were your questions in supporting students’ thinking today? What did students say or do that showed they were effective?

### Print Formatted Materials

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