Ideas for teaching expanded notation? - ProTeacher Community


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Ideas for teaching expanded notation?
Old 02-09-2009, 08:04 PM
 
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What are your ideas for teaching expanded notation?


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Expanded Notation
Old 02-11-2009, 11:29 AM
 
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I may be of no help to you, but I was really curious as to why first graders are being taught expanded notation. This is my first year teaching first grade. I taught second grade for seven years, and none of them knew how to do it nor was it taught.

Are you doing just tens and ones? I am also curious to know how does one teach first graders expanded notation. I would love to teach mine.
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Old 02-11-2009, 11:59 AM
 
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I am shocked kids are being taught expanded notation in first grade, too!! I think that starts in 3rd grade. Maybe post it on the 3rd grade board.
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Old 02-11-2009, 05:59 PM
 
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I agree that it is out of my first graders capabilities, however it is in the Arizona state standards for first grade. It is also in my district's curriculum. I hear of an idea today. You fold a large index card (5x7) in on 1/2 of the card. You put 3 on one the folded side and 5 on the other side. The folded part then opens to show 30 +. The 5 shows too, so the students see 30 + 5 . I'd still love any ideas anyone has.
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Old 02-16-2009, 02:24 PM
 
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I teach first grade in Arizona and looked over the standards, to see if I was missing it, it seems that they have taken it out of the updated standards, which were revised in 6-2008

Have you checked again?


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Expanded Notation
Old 02-20-2009, 04:01 PM
 
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It is definitely in our current standards. I'm teaching it this week. I have them say a chant " 50 plus 3 is 53". It is pretty tricky when they get to a number like 12 and 6.

Good luck. I don't have an answer.
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