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# Same Seesaw Sums (1.OA.6, 1.OA.7)

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3 MB|13 pages
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Product Description
Suggested grade level: 1st and 2nd
Contains: 30 addition seesaw pairs, center sign,
common core sign and a matching worksheet.
This center has 13 pages in all!
Children match the number sentences with the same sums by using various strategies
and complete the worksheet.
This is the 2012-2013 First Grade Math Center Club center for the month of April.
Graphics used with permission of www.anniethingspossible.com

COMMON CORE STANDARDS

Operations and Algebraic Thinking Standards
1.OA.6. Add and subtract within 20, demonstrating fluency
for addition and subtraction within 10. Use strategies such as
counting on; making ten (e.g., 8 + 6 = 8 + 2 + 4 = 10 + 4 = 14);
decomposing a number leading to a ten (e.g., 13 – 4 = 13 – 3
– 1 = 10 – 1 = 9); using the relationship between addition and
subtraction (e.g., knowing that 8 + 4 = 12, one knows 12 – 8 =
4); and creating equivalent but easier or known sums (e.g., adding 6 + 7 by creating the known equivalent 6 + 6 + 1 = 12 + 1 = 13). Work with addition and subtraction equations.

1.OA.7. Understand the meaning of the equal sign, and
determine if equations involving addition and
subtraction are true or false. For example, which of the
following equations are true and which are false? 6 = 6, 7 = 8 – 1, 5 + 2 = 2 + 5, 4 + 1 = 5 + 2.
Total Pages
13 pages
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Teaching Duration
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