• @Strae
      link
      231 year ago

      This is one of those problems that makes more sense with context. The teacher had the students working on “reasonableness”, which is essentially “does the question I’m asking make sense?”. The students were probably instructed to ignore actually trying to solve the problem when presented with one, but instead explain why the question either does or doesn’t make sense.

      In this case the student potentially misunderstood the task. The failure on the teacher’s part is wording the question in such a way that it actually has a reasonable solution, and isn’t necessarily an unreasonable question.

      • @ribboo
        link
        English
        341 year ago

        The feedback should look totally different if that was the case though

        • @Strae
          link
          English
          71 year ago

          The teacher doesn’t need to write all of that to get the point across. They can speak to them on the side and say, “remember when we worked on reasonableness last Tuesday?”

          • @ribboo
            link
            English
            31 year ago

            I’m a teacher myself so I fully get how that can be done. But the written feedback is still very, very off if the assignement is what you said it is.

            Honestly looks way more like a teacher who is a bit to rigged in their thinking and just got it wrong. I know plenty of those!

      • SoupOfTheDay
        link
        fedilink
        161 year ago

        This isn’t testing reasonableness. This is testing to see if a student understands that to properly compare fractions the wholes have to start as equivalent.

        Source: I use questions similar to this every year because if I don’t get some real funky diagrams.

        • NightDice
          link
          fedilink
          8
          edit-2
          1 year ago

          But… you can totally compare fractions without the whole being equivalent. You just have to know the size of the wholes. It’s just a poorly phrased question that has more than one correct answer when only one was intended.

          Edit: also, it’s totally testing reasonableness, that’s literally the title of the question. Still poorly phrased though.

          • SoupOfTheDay
            link
            fedilink
            41 year ago

            9 and 10 year olds lack the understanding or ability adjust for differently sized wholes.

            Ok, I misspoke when I said it’s not testing for reasonableness. It’s what I get for commenting right after waking up. The reasonableness it’s checking for is can the students understand what makes the situation true. That the wholes are different sized. It’s not a poorly worded problem, the teacher just doesn’t know what they are doing.

            Source: again, I teach this scenario every year and the students figure it out every year.

      • @Octavius
        link
        11 year ago

        Sorry I’m still trying to get my head around the question. What is the answer the teacher expected/ the question the teacher meant to ask? 🤔

        • @Strae
          link
          51 year ago

          It makes more sense when you remove the fractions, but I assume they were working on them.

          It’s easier this way: “John ate 4 slices of pizza. Dave ate 5 slices of pizza. John ate more slices of pizza than Dave. How is this possible?”

          The answer they’re looking for is: “This is not possible because 5 slices of pizza is more than 4 slices of pizza.”

          It’s a really bizarre question, and is poorly worded, but the concept could be really important depending on the age/ability of the student.

          It’s like teaching a kid to fact check I guess.

          • @Octavius
            link
            11 year ago

            Oh wow. I love questions asking how when the answer is it’s not … Thank you for the explanation 😅

    • Double_A
      link
      fedilink
      171 year ago

      Exactly! The answer the kid gave is the “correct” one because it shows a proper reasoning about fractions. While the teachers logic assumes that fractions are some kind of absolute value of measure???

      • smetana
        link
        fedilink
        121 year ago

        That’s what annoys me with marking that as wrong. The kid clearly understood the problem.

        • @EmpathicVagrant
          link
          English
          81 year ago

          Teacher doesn’t know there’s more than one size of pizza I guess.

      • @[email protected]
        link
        fedilink
        41 year ago

        The teacher’s from another timeline where the “pizza” made it into SI as the standard unit of food area.

  • Iron Lynx
    link
    43
    edit-2
    1 year ago

    Nah, the kid’s right. Suppose Marty eats 4/6 of his pizza p1, and Luis eats 5/6 of his pizza p2, it means that for 4/6 p1 > 5/6 p2, p1 > (5/6)/(4/6) p2, which equals p1 > 5/4 p2

    In other words, Marty’s pizza needs to be at least 25% larger than Luis’.

  • manitcor
    link
    fedilink
    81 year ago

    is this common core?

    if so its is teaching how unreasonable the world can be at least.

    • SoupOfTheDay
      link
      fedilink
      91 year ago

      It’s a pretty common problem in 4th/5th grade. I wouldn’t say it’s common core. It’s just making sure students know that to properly compare fractions the wholes need to begin as the same size.

    • SoupOfTheDay
      link
      fedilink
      21 year ago

      Teacher always eats the entire pizza, that way they never have to worry about this problem.