Illustrative Mathematics
Level A
Unit: Numbers and Operations and Algebraic Thinking
Key Lesson 1.3.19 Methods for Addition Within 20
Lesson topic: Addition within 20
Instructor Materials
- Teacher Guide
- Slides
- CCRS Standard: 1.OA.3, 1.OA.6
- Learning goal: Analyze methods for adding within 20. Use addition methods flexibly to find sums based on the numbers in a given problem.
- 1.3 Assessment and Practice Problems
Student Materials
Related Lessons
Preparation
If students need additional lessons before this key lesson, use these supplemental lessons.
Review and Extend
Use these supplemental lessons if needed after teaching this key lesson.
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