Lesson 1Explore the counting sequence for counting to 100 and beyond
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- Lesson 2
Count groups of ten and extra ones
1 2 1 - Lesson 3
Count a large group of objects by counting tens and ones
1 2 1 - Lesson 4
Represent a number from 20 to 99
1 2 1 - Lesson 5
Use a number line to position and estimate the numbers 20-99
1 2 1
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