# Lesson 28 Around the Room

• Let’s write addition and subtraction story problems.

## Warm-up Notice and Wonder: Counting Things in the Classroom

What do you notice?
What do you wonder?

## Activity 1 Writing Classroom Story Problems

Noah had 8 pencils.
Elena had 5 pencils.
Han had 4 pencils.

1. Addition story problem:

Solve the story problem.
Show your thinking using drawings, numbers, or words.

Equation:

2. Subtraction story problem:

Solve the story problem.
Show your thinking using drawings, numbers, or words.

Equation:

## Activity 2 Story Problem Posters

Now we’re going to use your story problems from the last activity to make posters so we can show our thinking and challenge each other.

## Activity 3 Poster Gallery Walk

Let’s solve our classmates’ story problems.

1. Solve the story problem using drawings, numbers, or words.

Equation:

2. Solve the story problem using drawings, numbers, or words.

Equation:

3. Solve the story problem using drawings, numbers, or words.

Equation:

4. Solve the story problem using drawings, numbers, or words.

Equation: