G1 U3 L9 SJ

Applied MP

MPs * Embedded MP

Conceptual Lesson Grade 1 · Unit 3 · Lesson 9

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3

*  *

MC: 1.OA.3, 1.OA.6

equation.

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4

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6

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7

Today, I will break apart numbers to find a sum and write the

Vocabulary

Steps

Base ten frame:

1. Identify how to make 10. 2. Record the expression that shows how to break apart a number to make 10.

Break apart 3 9+3= 9+3= 9+3=

3. Record the expression that shows 10. 4. Record the sum by completing the equation.

9+1+2 10 + 2 12 Make 10

Equation: number sentence that uses an equal sign to show that two groups are equal 9 + 3 = 12 Expression: a number phrase that shows the value of something (has no equal sign) 9+3

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Grade 1 Unit 3 Lesson 9 C TE

8

*

/ Directions: Break apart a number to make 10 and find a sum.

1.

7+8=

7+8= 7+8= 7+8=

2.

9+2=

9+2= 9+2= 9+2=

Copyright © Swun Math

Grade 1 Unit 3 Lesson 9 C TE

Directions: Break apart a number to make 10 and find a sum.

1. Counters used.

4+7=

4+7=

4+7= 4+7=

2. No counters used.

5+8=

5+8= 5+8= 5+8=

*MP3: Do you agree/disagree with what

said?

*MP6: How do you know your answers are correct/reasonable?

Recap today’s lesson with one or more of the following MP questions: MP1: What are your steps? MP2: What math expression was used to represent the situation? MP5: What tool was used today? Why?

Copyright © Swun Math

Grade 1 Unit 3 Lesson 9 C TE