Comment on PI is what

• aesopjah@lemm.ee ⁨1⁩ ⁨year⁩ ago

  Like, at least make it 3 instead of 5. Still allows for mental math

  source

  • LemmysMum@lemmy.world ⁨1⁩ ⁨year⁩ ago

    It’s fucking pi. It’s a constant that will never change in their entire lives, just teach reality the first time instead of making up a thousand little lies to correct later.

    source

    • fsxylo@sh.itjust.works ⁨1⁩ ⁨year⁩ ago

      thousand little lies

      What do you mean there are more than 3 states of matter?

      source

      • echodot@feddit.uk ⁨1⁩ ⁨year⁩ ago

        Wait until they start to learn about quantum foam and super fluids.

        source
    • aesopjah@lemm.ee ⁨1⁩ ⁨year⁩ ago

      Gotta cut it off at some point though, right? How many decimals? 10, 4, 1, or 0?

      Plus, this is a test not the knowledge delivery. Some thing as ‘assume a flat plane with no friction’ for a physics test. Yeah it’s not 100% accurate but the test taker can be evaluated on the methods

      source

      • echodot@feddit.uk ⁨1⁩ ⁨year⁩ ago

        How are you rounding 3.14… to equal 5?

        source
      • zeppo@lemmy.world ⁨1⁩ ⁨year⁩ ago

        But why 5 and not 4 or 3?

        source
      • LemmysMum@lemmy.world ⁨1⁩ ⁨year⁩ ago

        Everything is knowledge delivery if the knowledge is correct.

        source

        • -> View More Comments
  • hansl@lemmy.world ⁨1⁩ ⁨year⁩ ago

    Or just use a cube and say one side is 5 long. Does it really have to be a cylinder?

    source
• Reddit_Is_Trash@reddthat.com ⁨1⁩ ⁨year⁩ ago

  This is what we get when we cater to the dumbest kids in the class.

  source

  • echodot@feddit.uk ⁨1⁩ ⁨year⁩ ago

    The dumbest kids in class can’t handle algebra.

    It’s a really bad question for all sorts of reasons. Firstly because they defining π as 5 (it’s not even close to the real value) and they never explain what h is.

    Also you should probably just use letters everywhere at this point and not use π unless π equals π.

    source
  • LemmysMum@lemmy.world ⁨1⁩ ⁨year⁩ ago

    No child left behind = every child left behind.

    source
  • zeppo@lemmy.world ⁨1⁩ ⁨year⁩ ago

    I was thinking more it’s Freedom Pi from Florida or Texas or something.

    source

    • vivadanang@lemm.ee ⁨1⁩ ⁨year⁩ ago

      Pretty sure they call that frito-pi in Texas

      source

      • zeppo@lemmy.world ⁨1⁩ ⁨year⁩ ago

        Sort of. Frito Pie (my grandmother is from Texas and used to make it) is covered with Texas chili.

        source
• F4lcon@discuss.tchncs.de ⁨1⁩ ⁨year⁩ ago

  So? You think you’ll get the correct result by using 3? Or 3.14? Not quite. You can only get infinitesimally close to the correct result by increasing digits of pi.

  And of course, if you really need that circumference for something critical, guess what? You use the things people developed for this very problem, software packages, and so on. And of course, you get it double checked, triple checked.

  If it’s assume pi is 5, it’s not misinformation. If they point guns at kids and say it’s 5 for real, then yes.

  source

  • LemmysMum@lemmy.world ⁨1⁩ ⁨year⁩ ago

    Or you could just use 3.14 which is infinitesimally more correct than 5, not lie about the number and aim for correctness and accuracy so people learn how to do things right the first time.

    If you can’t handle a few decimal points then you aren’t ready for pi, go back to third grade.

    source

    • F4lcon@discuss.tchncs.de ⁨1⁩ ⁨year⁩ ago

      I don’t think you understand what infinitesimally means! It means the opposite- you want to use ‘infinitely’ there.

      Now, not being a condescending asshole, I really take issue with you calling an approximation a ‘lie’. And honestly, who’s multiplying decimal points mentally? That’s difficult. Use a calculator. Want to avoid calculators for an exam? Simplify! That’s why they use 5 and not 3.14.

      source

      • LemmysMum@lemmy.world ⁨1⁩ ⁨year⁩ ago

        infinitesimally I was typing in a rush and mistyped, but you understand what I meant.

        Simplify! That’s why they use 5 and not 3.14.

        That’s a bullshit excuse. 3 could be argued but 5 is straight disinformation. And I do multiplication of decimals in my head because I was taught how to in school, that’s how far behind the US system is.

        source

        • -> View More Comments