# Division: Solving for Unknown Factors

Help your class conquer division with this lesson that has them find the unknown factor using multiplication!
Need extra help for EL students? Try the Number Relationships in Division pre-lesson.
##### View aligned standards
Need extra help for EL students? Try the Number Relationships in Division pre-lesson.

#### Learning Objectives

Students will be able to solve for the unknown factors in division problems.

The adjustment to the whole group lesson is a modification to differentiate for children who are English learners.

#### Introduction

(5 minutes)
• Invite students to bring their math journals and a pencil to the class meeting area.
• Have students place their supplies on the floor next to them.
• Tell students that today they're going to learn strategies for solving division problems.
• Let the students know that to solve for the unknown factor in a division problem, they must have a strong grasp of some multiplication strategies and multiplication facts.
• On the board write “Multiplication Strategies.”
• Ask students to share with the class some multiplication strategies they already know. As the students share, list the strategies on the board under the term “Multiplication Strategies.”
• Some strategies students may share are repeated additions, arrays, skip counting, or grouping.

Beginning

• Have students share their strategies with an EL with the same home language (L1) or a supportive non-EL.
• Allow students to discuss the strategies and create visuals to support their explanations.

Intermediate

• Provide student-friendly definitions and accompanying images for important terminology, such as: multiplication, strategy, unknown factor, division.
• Ask students to talk to a partner about multiplication strategies before sharing with the whole group.