Illustrative Mathematics
Level A
Unit: Numbers and Operations and Algebraic Thinking
Key Lesson 1.3.24 Relate Counting to Addition and Subtraction
Lesson topic: Addition and subtraction
Instructor Materials
- Teacher Guide
- Slides
- CCRS Standard: 1.OA.4, 1.OA.5, 1.OA.6, 1.OA.8
- Learning goal: Analyze and use counting on and taking away as methods to subtract.
- 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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