Lesson 5
Find the Difference
Lesson Purpose
The purpose of this lesson is for students to develop fluency with subtraction within 10, using the relationship between addition and subtraction.
Lesson Narrative
In the previous lesson, students discuss the relationship between addition and subtraction. In this lesson, students find differences within 10. They may take away, count on, or use addition facts to help them find the value of the difference between two numbers. The relationship between addition and subtraction is the focus of the syntheses throughout the lesson.
- Engagement
Learning Goals
Teacher Facing
- Use the relationship between addition and subtraction to find differences within 10.
Student Facing
- Let’s find differences within 10.
Required Materials
Materials to Gather
Required Preparation
Lesson Timeline
| Warm-up | 10 min |
| Activity 1 | 15 min |
| Activity 2 | 10 min |
| Activity 3 | 10 min |
| Lesson Synthesis | 10 min |
| Cool-down | 5 min |
Teacher Reflection Questions
Many students prefer addition to subtraction. How do the activities in this lesson help students see that addition and subtraction are related and that addition can be used to find the difference between two numbers?