Owner:
Mike Webb

1.
Unpacking

Teaching Point:

I can find unknowns in addition equations by using number bonds.

*Use the number line

1.OA.8

Determine the unknown whole number in an addition or subtraction equation relating three whole numbers.

Unpacking - First graders use their understanding of and strategies related to addition and subtraction in 1OA4 and 1OA6 to solve equations with an unknown. Rather than symbols, the unknown symbols are boxes or pictures.

*Letâ€™s use boxes for unknowns as this prepares them for 2nd grade and up.

*count on using number lines, cubes, ten frames, and/or drawing circles

I can find unknowns in addition equations by using number bonds.

*Use the number line

1.OA.8

Determine the unknown whole number in an addition or subtraction equation relating three whole numbers.

Unpacking - First graders use their understanding of and strategies related to addition and subtraction in 1OA4 and 1OA6 to solve equations with an unknown. Rather than symbols, the unknown symbols are boxes or pictures.

*Letâ€™s use boxes for unknowns as this prepares them for 2nd grade and up.

*count on using number lines, cubes, ten frames, and/or drawing circles

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Common Core Standards:

CCSS.Math.Content.3.OA.D.8

2.
Application Problem

Application Problem:

April has 10 board games. She bought 6 more at a yard sale. How many board games does she have now?

10 + 6 =

Thomas is collecting boxes to build a fort. He has 8 boxes. His mom said he need 13 boxes to make the fort. How many more boxes does he need to collect?

8 + = 13

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3.
Teaching Plans for GRR

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4.
Criteria for Success

1. Read the equation.

2. Fill in the knowns

3. Find the unknown

2. Fill in the knowns

3. Find the unknown

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5.
Materials Needed

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