Comparison word problems

Discussion in 'Elementary Education' started by Pisces_Fish, Sep 27, 2014.

  1. Pisces_Fish

    Pisces_Fish Fanatic

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    Sep 27, 2014

    I got lots of blank stares at math yesterday when I introduced comparison problems. I teach the PIPS model for solving - we identify the Problem (question,) Information, Picture (or write an equation), then Solve.

    But this model doesn't work well for problems like:

    Dale has some apples. Mike has 17 apples. If Dale gets 3 more apples he will have as many apples as Mike. How many apples does Dale have?

    Their inclination is to add 17+3 because they see the word "more."

    I found this http://youtu.be/Yar4Pmm1toE, any other resources or tricks?

    I'm brain-locked when trying to help my students solve. :help:
     
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  3. Upsadaisy

    Upsadaisy Moderator

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    Sep 27, 2014

    I would probably just make a t-chart and use guess and check. Or use 3 columns, Dale now, Dale plus 3, Mike 17. Do lots of problems like this whole-class and have kids make educated guesses for the unknown.
     
  4. iteachbx

    iteachbx Enthusiast

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    Oct 5, 2014

    I'm doing this this week with multiplication. We're going to use the diagram like in the video you posted. We'll see how it goes. I think the more visual for problems like these the better!
     
  5. Pashtun

    Pashtun Fanatic

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    Oct 5, 2014

    I would try a KW chart. Have the students write down what they know about the problem, and what we want to know from the problem. The want to know is How many apples does dale have? then talk aobut what we do know, such as, who has more Apple to begin with, how do we know this?
    What does it mean that Dale is getting 3 apples?..etc

    Maybe this will help.
     
  6. iteachbx

    iteachbx Enthusiast

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    Oct 6, 2014

    The diagram worked pretty well today. The key was making sure they were labeling the diagram as they draw it so they can see what information they have and what they still have to figure out.
     

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