Lesson 4
Add and Subtract Your Way
Lesson Purpose
Lesson Narrative
The work in this lesson builds from grade 1, where students add and subtract within 20 with different strategies. This is a chance to formatively assess how students find sums and differences in this range. Connecting cubes organized in towers of 10 and singles should be made available for students to use, however encourage students not to use them if they don’t need them. By the end of grade 2, students must fluently add and subtract within 20.
Math Community
Tell students that, at the end of the lesson, they will be asked to identify specific examples of norms they experienced as they did math.
- Action and Expression
- MLR2
Learning Goals
Teacher Facing
- Add and subtract within 20 in a way that makes sense to them.
Student Facing
- Let’s add and subtract within 20.
Required Materials
Materials to Gather
Materials to Copy
- How Close? Stage 1 Recording Sheet
Required Preparation
CCSS Standards
Addressing
Lesson Timeline
Warm-up | 10 min |
Activity 1 | 20 min |
Activity 2 | 15 min |
Lesson Synthesis | 10 min |
Cool-down | 5 min |
Teacher Reflection Questions
Suggested Centers
- Number Puzzles: Addition and Subtraction (1–4), Stage 1: Within 10 (Supporting)
Print Formatted Materials
Teachers with a valid work email address can click here to register or sign in for free access to Cool Down, Teacher Guide, and PowerPoint materials.
Student Task Statements | docx | |
Lesson Cover Page | docx | |
Cool Down | Log In | |
Teacher Guide | Log In | |
Teacher Presentation Materials | docx | |
Blackline Masters | zip |