Illustrative Mathematics
Level A
Unit: Numbers and Operations and Algebraic Thinking
Key Lesson 1.4.9 Represent Two-Digit Numbers
Lesson topic: Two-digit numbers
Instructor Materials
- Teacher Guide
- Slides
- Level A Centers: Check it Off stages 1-3, Grab and Count stage 2, Shake and Spill stages 3-5
- CCRS Standard: 1.NBT.2, 1.NBT.4, 1.NBT.6, 1.OA.5, 1.OA.6
- Learning goal: Represent the base-ten structure of two-digit numbers with drawings, words, and addition expressions.
- 1.4 Assessment and Practice Problems
Student Materials
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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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