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Ideas for teaching expanded notation?

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 1st grade fun Joined: Dec 2007 Posts: 146 Full Member
1st grade fun

Joined: Dec 2007
Posts: 146
Full Member
Ideas for teaching expanded notation?
02-09-2009, 08:04 PM
 #1

What are your ideas for teaching expanded notation?

 lenarmc Joined: Jun 2007 Posts: 1,645 Senior Member
lenarmc

Joined: Jun 2007
Posts: 1,645
Senior Member
Expanded Notation
02-11-2009, 11:29 AM
 #2

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.

 annie13 Joined: Aug 2008 Posts: 1,336 Senior Member
annie13

Joined: Aug 2008
Posts: 1,336
Senior Member

02-11-2009, 11:59 AM
 #3

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.

 1st grade fun Joined: Dec 2007 Posts: 146 Full Member
1st grade fun

Joined: Dec 2007
Posts: 146
Full Member

02-11-2009, 05:59 PM
 #4

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.

 ms.gteacher Joined: Dec 2008 Posts: 1,886 Senior Member
ms.gteacher

Joined: Dec 2008
Posts: 1,886
Senior Member

02-16-2009, 02:24 PM
 #5

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?

 begborrowstea Joined: May 2008 Posts: 543 Senior Member
begborrowstea

Joined: May 2008
Posts: 543
Senior Member
Expanded Notation
02-20-2009, 04:01 PM
 #6

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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