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Partial Sums and Parents!!

 
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Sheri Reed



Joined: 03 Jun 2003
Posts: 17
Location: Vigo

PostPosted: Wed Dec 01, 2004 11:33 am    Post subject: Partial Sums and Parents!! Reply with quote

I teach second grade. I piloted third grade EM last year and taught partial sums to a group of students in which 1/2 had EM the previous year and 1/2 who had not. I did not find teaching the partial sums method to be as difficult as this year. I sent the homelink 4. 8 home and the student were to use any addition strategy they choose (parent instructions were clear on a home link family note) However, the parent chose to show them the traditional way because at this point partial sums had not been shown. Some of the students were able to answer the problems in their head and use the hundreds chart like we have been all year....but for those who were not able to do it in their heads had extra "help" from mom and dad showing them their way!! We had a math night in October and we showed the parents the partial sums method and I had a lot of frustrated parents who simply did not understand why this was a good algorithm to use. I am wondering why 4.9 wasn't before 4.8 so that the kids had already learned about partial sums!!!???? Confused
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Mandee May



Joined: 03 Jun 2003
Posts: 34
Location: Pike

PostPosted: Sun Dec 05, 2004 11:09 pm    Post subject: Reply with quote

Most lessons in EM are set up so that the students can discover or explore concepts before actually teaching strategies. Take the ballpark estimates for example. We are asked not to initially show the children how to round and then later we can show them a more formal way of estimating. I think that we are supposed to see how the students solve the problem first then show them a formal way. I know many parents are at first confused and frustrated by partial sums. I explain to them that partial sums teaches students the actual value of the digits and shows students all the steps involved in adding, not just the short cut. I've found that partial sums also helps the students learn subtraction easier too, because they actually understand the relationship of the numbers and what each digit stands for. I hope this helps in some way. Good luck!
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Amy Sweeney



Joined: 03 Jun 2003
Posts: 13
Location: Hammond

PostPosted: Mon Jan 24, 2005 1:12 pm    Post subject: partial sums and parents Reply with quote

Most of my students are doing well with the partial sums algorithm. Now we have moved on to trade first and I am finding that quite a few of my students are trying to do partial sums for subtraction. Any helpful hints out there to correct this mistake?
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Kim Curley



Joined: 03 Jun 2003
Posts: 16
Location: Vigo

PostPosted: Tue Jan 25, 2005 1:39 pm    Post subject: Parial sums and parents Reply with quote

I think you just proved why the family math nights are so important . Parents don't always understand the things we do and why. I think the now that we are all teaching EDM things will be getting easier. If my students don't use partial sums when they are supposed to I have them re do it. I also really emphasize that they are the "teachers" and they are supposed to teach their parents, because most parents don't know about this way to add. The kids seem to love being the teacher. Good Luck!
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Charlotte Riechers



Joined: 03 Jun 2003
Posts: 8
Location: Hammond

PostPosted: Fri May 13, 2005 12:37 am    Post subject: Reply with quote

We also had a few students trying to use the partial sums algorithm for trade first subtraction. It was interesting that they would try to adapt that strategy to a different problem.
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