lesson 2-6 making 10 to add mr. baker 2 nd grade
TRANSCRIPT
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Lesson 2-6Making 10 to Add
Mr. Baker2nd Grade
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Today We Will Learn!
• Addition facts involving 9 can be changed to an equivalent fact with 10. Addition facts involving 8 can be changed to an equivalent fact with 10.
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Vocabulary Review
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You have learned how to use ten-frames to show numbers.
Today you will use ten-frames to help you add numbers.
How did making a 10 help you to add three numbers?
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The Problem!!
• How can you use these ten-frames to show 9 plus 3?
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•How can you show 9? (put 9 counters on the first ten-frame)•How can you show 3? (put 3 counters on the second ten-frame)•You can make a full ten first by moving one counter from the second ten-frame to the first ten-frame.
•Now we have 10 + 2•10 + 2 = 12 so 9 + 3 = 12
•Let’s try some more.
Let’s Explore!!
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•Use the tens-frames to solve these.
2. 8 plus 6
3. 7 plus 4
4. 6 plus 7
•Use your work mat to record your answers.
Let’s Explore!!
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Let’s Explore!!
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Let’s Explore!!
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Learning Bridge!
• In this lesson, you will learn how to make a 10 to help you add.
• Let’s watch and learn!– CLICK HERE– (After learning bridge use guided practice page to continue lesson.)
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Close
• In this lesson, you learned that in an addition fact with 9 you can make the 9 a 10 and make the other addend 1 less.
• The sums of these two facts will be the same.
• GREAT JOB!
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Math Journal & Technology
• Draw a picture to show how you can make 10 to help you add 4 + 9.
• On your I Pad go to the math folder and begin working on Cloud Math.