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

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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