## Overview

Lesson 1: Understand "equal groups of" as multiplication.

Lesson 2: Relate multiplication to an array model.

Lesson 3: Interpret the meaning of factors-the size of the group or the number of groups.

Lesson 4: Understand the meaning of the unknown as the size of the group in division.

Lesson 5: Understand the meaning of the unknown as the number of groups in division.

## Lesson 1

Lesson 1: Understand "equal groups of" as multiplication.

Eureka Module: Module 1, Lesson 1

## Lesson 2

Lesson 2: Relate multiplication to an array model.

Eureka Module: Module 1, Lesson 2

## Lesson 3

Lesson 3: Interpret the meaning of factors-the size of the group or the number of groups.

Eureka Module: Module 1, Lesson 3

## Lesson 4

Lesson 4: Understand the meaning of the unknown as the size of the group in division.

Eureka Module: Module 1, Lesson 4

## Lesson 5

Lesson 5: Understand the meaning of the unknown as the number of groups in division.

Eureka Module: Module 1, Lesson 5