Lesson 1Combine addends using the addition symbol
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- Lesson 2
Understand that addends can be represented in any order
1 2 1 - Lesson 3
Understand the use of the equals sign in equations
1 2 1 - Lesson 4
Understanding part-part-whole relationships
1 2 1 - Lesson 5
Add parts to find the value of the whole and write the equation
1 2 1 - Lesson 6
Find the missing addend in an equation
1 2 1 - Lesson 7
Partition a whole into two parts and express as a subtraction equation
1 2 1 - Lesson 8
Using bar models to subtract
1 2 1 - Lesson 9
Understand the relationship between addition and subtraction
1 2 1 - Lesson 10
Understand addition as increasing a quantity
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