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- Building sets of 13 and 14
- In this lesson, one of a seven-part unit from Illuminations titled “Let's Count to 20,” students explore sets of 13 and 14. They construct and identify sets of 13 and size 14. They then compare sets to sets of size 13 and size 14, record the... (Learn more)
- Format: lesson plan (grade K–2 Mathematics)
- Provided by: Illuminations

