# Lesson 11

Share Story Problems

## Warm-up: Number Talk: Add and Subtract 2 and 3 (10 minutes)

### Narrative

The purpose of this Number Talk is to elicit strategies and understandings students have for adding and subtracting within 5. These understandings help students develop fluency.

### Launch

• Display one expression.
• “Give me a signal when you have an answer and can explain how you got it.”
• 1 minute: quiet think time

### Activity

• Keep expressions and work displayed.
• Repeat with each expression.

### Student Facing

Find the value of each expression.

• $$3 - 2$$
• $$3 + 2$$
• $$4 - 2$$
• $$4 - 3$$

### Activity Synthesis

• Record each expression as an equation as students share their answers.
• “When did you need to add? When did you need to subtract? Did you use the same strategy to add and to subtract?”

## Activity 1: Display Story Problems and Solutions (25 minutes)

### Narrative

The purpose of this activity is for students to represent and solve the story problem that they developed in the previous lesson (MP2). Students create a poster to display their story problem. This activity can also be adapted so that students create a poster about another student’s story problem or work together in partners and make a joint poster about one story problem.

Action and Expression: Develop Expression and Communication. Give students access to 10-frames to help them solve their story problems.
Supports accessibility for: Organization

### Required Materials

Materials to Gather

### Launch

• Give each student a piece of chart paper and access to connecting cubes or two-color counters and crayons.
• “Tell your partner the story problem that you came up with yesterday.”
• “Today you are going to make a poster to show your story problem. Solve the story problem. Show your thinking using drawings, numbers, or words.”

### Activity

• 10 minutes: independent work time
• “If you have time, you may want to show different ways to solve the problem using pictures, numbers, words, or symbols.”
• 10 minutes: independent work time

### Activity Synthesis

• “Now you are going to get a chance to look at the work that your classmates did.”

## Activity 2: Story Problem Gallery Walk (15 minutes)

### Narrative

The purpose of this activity is for students to share how they represented their story problems and make connections between different representations (MP2).

MLR8 Discussion Supports. During the Gallery Walk, invite students to tell each student what they notice about their poster, including what is the same and what is different from their own poster. This gives all students an opportunity to produce language.

### Launch

• “We are going to do a gallery walk so that we can see everyone’s work for their story problem. As you walk around, think about how each poster is the same as and different from your poster. Think of any ideas that you may want to add or change about your poster.”

### Activity

• Invite half the class to stand next to their poster while the other half of the class walks around and looks at the posters.
• 5 minutes: gallery walk
• Switch groups.
• 5 minutes: gallery walk

### Activity Synthesis

• Display two different student posters.
• “What is the same about how _____ and _____ showed their story problems? What is different?”

## Lesson Synthesis

### Lesson Synthesis

“What is your favorite thing we have done in math class this year?”

## Student Section Summary

### Student Facing

In this section, we explored our school community.

We created number books to show important things from our school.

$$5 + 3 = 8$$