# 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.

Addition story problem:

Solve the story problem.

Show your thinking using drawings, numbers, or words.Equation:

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.

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

Equation:

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

Equation:

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

Equation:

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

Equation: