# What's That Number?

Practice finding unknown numbers in addition equations using fun and silly word problems.
Need extra help for EL students? Try the What's the Value? pre-lesson.
##### View aligned standards
Need extra help for EL students? Try the What's the Value? pre-lesson.

#### Learning Objectives

Students will be able to find an unknown number in an addition word problem.

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

#### Introduction

(5 minutes)
• Write a story problem up on the board. Read it aloud to your students. For example: "There are 20 animals in the tree. There 10 are snakes, and the rest are monkeys. How many monkeys are in the tree?"
• Write out a corresponding equation to go with the word problem. For the problem above, write out: 10 + ________ = 20.
• Ask them to turn and talk with a partner to share how they could solve this problem.

Beginning

• Provide students with visuals that connect to the word problem.
• Pair students with a partner who speaks the same home language (L1), if possible.

Intermediate

• Encourage students to rephrase the story problem in their own words to a partner to check for understanding.
• Provide students with sentence stems, such as:
• I can solve the problem by ________.
• A strategy I can use is ________.