this post was submitted on 06 Jul 2025
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[–] [email protected] 8 points 4 days ago

School really does prepare you for real life sometimes, it seems ...

[–] [email protected] 23 points 4 days ago (1 children)

Ah I recall my "science" teacher when I was 13 explaining to us that all materials expand when heated and shrink when cooled.

So I ask how ice floats, or how ice cubes swell above the tray.

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[–] [email protected] 2 points 4 days ago

Flashbacks to shitty math teachers. It was either this or "WHY DON'T YOU KNOW THIS YET!?" I quit participating and made a C for the rest of my academic career including college. I also got "I don't how you got this answer, but it's the right answer." . Hell I don't even know how I got that right answer but I refused to ask questions.

[–] [email protected] 51 points 4 days ago (7 children)

I can believe this. Not fake, not gay. The math teaching of the past was so dumb. Even now, I have 2 kids who never got a bad math teacher and still love math; two who did (one teacher who actually thought women ought not get higher education) and those two do not

And a good math teacher is a treasure beyond words. Mr. Galing, if I could have had you teach my kids through high school I would have taken them anywhere.

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[–] [email protected] 7 points 4 days ago

Never stop fighting their lies

[–] [email protected] 35 points 4 days ago

Americanized versioned, but with a match teacher it went something like this:

Teacher: Whoever can solve this will get an A.

me: I have a solution.

Teacher: come out and explain it.

Me: I do just that.

Teacher: that is correct, but you didn't use the method we just learned, no A, sit down.

[–] [email protected] 7 points 4 days ago

"youre not supposed to know that yet" then why in fucks name did you ask lady?

[–] [email protected] 18 points 4 days ago* (last edited 4 days ago) (3 children)

I had a kindergarten teacher try teaching syllables by clapping them out while saying the word: 👏 ALL 👏 I 👏 GATOR! Alligator! 👏 ALL 👏 I 👏 GATOR! Three syllables.

Tried correcting her, she just clapped and said gator again.

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[–] [email protected] 24 points 4 days ago (2 children)

Man... This sucks. I can't believe how many lemmings have had similar experiences. I'm just remembering one now where I was excited about math, went ahead in the curriculum to fractions, and answered everything in ratios. Instead of the teacher seeing the simple mistake, I just remember them being "wrong". How deflating.

Kids need connection before correction. I'm sort of glad my kid is glued to a screen doing adaptive math. It sucks in its own way, but better than unfeeling correction. Though, at least in my district, there's a big emphasis on empathy development so I think the teachers try to model that.

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[–] [email protected] 77 points 4 days ago (1 children)

We had computer classes where we had to learn about spreadsheets.

To do a number plus ten percent we had to put in A1+A1*10/100

I did A1*1.1 like a normal person.

She then went round to make sure everyone had put it in correctly. Got annoyed at me and changed A1 to something else to expose my folly.

Was visibly annoyed when it showed the right answer.

[–] [email protected] 15 points 4 days ago* (last edited 4 days ago) (2 children)

(I don't think that was your teachers point at all, but) couldn't the different formulas have produced different rounding errors due to floating point percision?

[–] [email protected] 21 points 4 days ago (1 children)

Excel has a 15 point float, a quadrillionth, which should be enough for anything you were using excel for.

[–] [email protected] 2 points 4 days ago

yeah because excel does rounding stuff automatically for you

try entering 0.1 + 0.2 - 0.1 - 0.2 == 0.0 in any programming language of your choice and see what happens.

[–] [email protected] 14 points 4 days ago (1 children)

Doubtful, but if anything mine would be more accurate. Fewer calculation steps to lose precision on. I think most spreadsheet software fudges floating point precision anyway. A computer programmer may accept that 0.1+0.2 is not 0.3 but an accountant or mathematician would not be having it.

I think she was just shit at maths tbh. As a kid you sort of assume all the teachers know more than you about every subject, and that's not the case at all.

[–] [email protected] 8 points 4 days ago

As a kid you sort of assume all the teachers know more than you about every subject, and that’s not the case at all.

same for chatgpt

[–] [email protected] 15 points 4 days ago (2 children)

Fucking hell I feel validated rn, I had a similar experience at that age but it was in language/reading class. It's so frustrating to know that you are correct but you lack the terminology/ability to properly convey why you are right.

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[–] [email protected] 27 points 4 days ago

God that teachers dumb.. Why even as the question? Why not just do 20 - 20 if you are going to be upset when a kid knows the answer. Simple! Don't ask questions you don't want the correct answers to. Teaching kids the wrong answers only messes them up the next year when they have to unlearn the bullshit you taught them.

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