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VitalSigns posted:Well the point isn't "you have to do it this exact way every time", the point is to get kids to think about how you could break it down so they notice things like "oh actually I know what 80/2 is so I could write 80+12 instead if I wanted" That is how long division works, though. You take 1000/2, then you take 10/2, then you take 8/2, to get 500+5+4 = 509. I understand how it works so I can figure out if I'm doing it right or not. On the other hand, I don't understand the explanations I'm finding online of Newton's method for division, and I can't find any examples that make sense.
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Feb 15, 2023 19:52
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I'm feeling queasy https://twitter.com/stephenwhittle/status/1625241883789127684
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Feb 15, 2023 19:56
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Chamale posted:That is how long division works, though. You take 1000/2, then you take 10/2, then you take 8/2, to get 500+5+4 = 509. I understand how it works so I can figure out if I'm doing it right or not. Long division is one algorithm that works the same way every time and you can always follow the steps and crank the answer. But it isn't always the easiest or most efficient way every time. If you know what 18/2 is you can just take that shortcut, you don't have to do every step of the long division to get an answer. Or like take 98÷2. You can crank through the long division (9÷2 is 4 remainder 1, bring down the 8, 18÷2 is 9, so 49). Or you could say it's (90+8)÷2 so that's 45 + 4 = 49. Or (100-2)÷2 that's 50-1 = 49. The last way is the quickest for me in that particular situation ymmv. Point is you're giving kids different tools they can use in different situations. Or not, nobody says you can't pick one algorithm and use it every time. But also I don't think everyone understands long division like you do. Some people just learn it as a set of steps without really getting the underlying principle. Twist these knobs just this way and the answer comes out. If they understood the principle, they wouldn't have a problem with "new math" because they'd grasp, like you do, that it's the same method but a different strategy. And I would think teaching kids more than one strategy to solve the same problem would give them more insight into what they are really doing idk I'm not a teacher though. I'm just a guy who finds mental math strategies useful in my everyday life. VitalSigns has issued a correction as of 20:35 on Feb 15, 2023 |
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Feb 15, 2023 20:31
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Flesh Forge posted:I'm feeling queasy Oh, a vigil. That'll get the state quaking in its boots.
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Feb 15, 2023 20:33
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VitalSigns posted:Yeah and that's an issue right, if you teach a kid something their parent was never taught, they're not going to be able to help their kid unless they can learn it themselves. So you need a solution for that. I know Khan Academy uses chunking in some of their examples. It's not a great replacement but if you're remotely tech savvy as a parent it shouldn't be that hard to find a video explaining the process. I think the schools really should be giving the parents resources for it but they barely have enough resources to teach the students so there's no way that's happening lol
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Feb 15, 2023 20:37
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Maybe what's also going on is that people realize standard of living is declining, ie. things are getting worse, but they don't understand why, cus lol @ class consciousness in the west and especially the US. So when they see something that is different than when they were young, ie. when things were better, the blame gets transferred onto that. If only we had kept everything the same things wouldn't be worse now. And yeah sure rose coloured happy youth glasses and all, but I have difficulty imagining Chinese parents being as upset about their children learning fancy new methods they themselves didn't learn, in the context of the massive development of Chinese society.
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Feb 15, 2023 20:52
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indigi posted:if you feel like elaborating on this I'd appreciate it it's hard to essentialize and i'd non-flippantly recommend just searching around for early ussr math education or something. there are half a decade+ of articles/discussions on it and how it's compared to various states of us early math education. also translated textbooks. the short of it is that the ussr set out to made a strong education program that covers mathematics and in the US educational materials have always been a bit of a racket. ussr had a fairly standardized curriculum taught by teachers with a math background at a pretty brisk pace. there's really nothing special or weird about it. the weird part is what the us does, which is like 9 years of arithmetic with teachers who may or may not remember their early math education which is fueled by an extremely hosed up for-profit industry. although that's not true for private schools, rich public school, magnet schools etc. https://sci-hub.ru/https://doi.org/10.2307/2310164 this is a short paper from 1957 but it should be pretty illustrative. there really is no trick or anything. and it's the same kind of thing rich us schools tend to do. they have people who know who to teach math teach the math, they don't spend 10 years grinding through workbooks the district buys ever year or two. they teach the same math they just get to the fun stuff a lot more quickly. it just turns out that if you set out to make a good national math education program you actually can do that
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Feb 15, 2023 20:57
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My hot take is that if you can't fairly easily learn whatever maths trick your young child is supposed to be learning then you may not be well placed generally for teaching them maths.Flesh Forge posted:Batman isn't even "super" he has like NO POWERS Batman is a fictional representation of a type of real life supervillain, a rich person.
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Feb 15, 2023 21:06
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Weka posted:maths lol
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Feb 15, 2023 21:07
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Weka posted:My hot take is that if you can't fairly easily learn whatever maths trick your young child is supposed to be learning then you may not be well placed generally for teaching them maths. sweating in a pile of garbage in his skintight pervert suit, waiting to ambush a poor person
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Feb 15, 2023 21:10
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indigi posted:if you feel like elaborating on this I'd appreciate it Cuttlefush posted:https://sci-hub.ru/https://doi.org/10.2307/2310164 https://sci-hub.ru/https://www.jstor.org/stable/41187346 here's another old, short paper from an american math professor describing early USSR math education for another perspective. these are also from before the US textbook publishers got hungrier and started making their hosed up little workbooks. can't find a good actual textbook example but https://en.wikipedia.org/wiki/Yakov_Perelman?useskin=vector did a pretty famous series of pop-math/sci books that are actual math books. little more whimsical than the actual textbooks though https://archive.org/details/MathematicsCanBeFun-1/page/n47/mode/2up (frankly i don't like it but it's noteworthy that this is kind of a beloved series of books and i can't think of any english pop-sci books that would dare ask the reader to actually do some math) Cuttlefush has issued a correction as of 21:25 on Feb 15, 2023 |
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Feb 15, 2023 21:22
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lmao a multi page thread derail over long division
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Feb 15, 2023 22:05
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the russians used a pencil 
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Feb 15, 2023 22:18
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Endman posted:lmao a multi page thread derail over long division absolutely no worse than comic book chat or dungeons&dragons chat
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Feb 15, 2023 23:03
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I search for hidden doors
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Feb 16, 2023 00:09
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indigi posted:I agree with the point "why would you do 40 + 40 + 12" rather than "80 + 2." but then again I can do four digit long division in my head so this just seems like extra legwork  the kid is supposed to do 2*X for a few different things then use those, in this case it's just an example and if it were real the kid could have done 2x40 but they hypothetical kid in this example didn't, 2x20 twice works though. it also makes more sense as a method to use and is quicker than traditional long division when you do something bigger like 1231234 / 67 fermun has issued a correction as of 02:36 on Feb 16, 2023 |
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Feb 16, 2023 02:33
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I honestly didn’t know there was a different way than that to do division, but I’m not an American so 
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Feb 16, 2023 03:09
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River full of dead fish? eh the government says it's fine *chugs glowing green goop* https://twitter.com/DaSkrubKing/status/1625969652072415256
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Feb 17, 2023 02:20
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Endman posted:I search for hidden doors n20s
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Feb 17, 2023 02:24
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Flesh Forge posted:River full of dead fish? eh the government says it's fine *chugs glowing green goop* I want no scrub. Even the king
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Feb 17, 2023 03:12
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*pulling back the charging handle* Remember, no scrub.
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Feb 17, 2023 03:13
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HootTheOwl posted:*pulling back the charging handle* Remember, no skub.
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Feb 17, 2023 06:33
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Ban this anti-skub flith
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Feb 17, 2023 06:55
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Flesh Forge posted:River full of dead fish? eh the government says it's fine *chugs glowing green goop* 
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Feb 17, 2023 12:19
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what the gently caress is a sexual centrist
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Feb 17, 2023 12:43
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megaterf, probably
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Feb 17, 2023 12:48
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gradenko_2000 posted:what the gently caress is a sexual centrist The meat in the sandwich imo
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Feb 17, 2023 13:00
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gradenko_2000 posted:what the gently caress is a sexual centrist Strong suspicion that they're an anti-trans weirdo.
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Feb 17, 2023 13:04
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gradenko_2000 posted:what the gently caress is a sexual centrist https://en.wikipedia.org/wiki/Yaoi_hole
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Feb 17, 2023 13:29
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Flesh Forge posted:absolutely no worse than comic book chat or dungeons&dragons chat The conversation about different ways to do math in your head basically is Dungeons and Dragons chat.
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Feb 17, 2023 14:46
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https://twitter.com/SonyaShaykhoun/status/1625964625702387723 https://twitter.com/SonyaShaykhoun/status/1626257765810204672  
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Feb 17, 2023 17:15
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Kinda glad NYC is dying now
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Feb 17, 2023 17:38
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Pooyork is drying
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Feb 17, 2023 18:01
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Arsenic Lupin posted:https://twitter.com/SonyaShaykhoun/status/1625964625702387723 I worked EMS in Manhattan and I can absolutely confirm that that was not, in fact, the first fall down drunk to end up passed out outside an apartment building on West End. Or on Park Avenue.
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Feb 17, 2023 18:07
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Arsenic Lupin posted:https://twitter.com/SonyaShaykhoun/status/1625964625702387723 read "(illegal?)" as "is it legal to not speak english to me?" at first lol
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Feb 17, 2023 18:18
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Also, IIRC most of Europe doesn't require you to pick up your dog poop. That's a very American thing. Enjoy Paris! And Rome!
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Feb 17, 2023 19:29
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Arsenic Lupin posted:Also, IIRC most of Europe doesn't require you to pick up your dog poop. That's a very American thing. Enjoy Paris! And Rome! My neighborhood has places specifically for letting your dog poop. They're called AirBnBs.
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Feb 17, 2023 19:32
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Arsenic Lupin posted:Also, IIRC most of Europe doesn't require you to pick up your dog poop. That's a very American thing. Enjoy Paris! And Rome! I get picking up dog poop but I always feel weird about sending poop to the landfill in a little plastic bags to spend the next few millennia just being bagged dog poop instead of decomposing For some reason the city won’t take it with the food scraps and yard debris which I understand is because they don’t want to pay the extra money to have the facilities be able to handle it safely My favorite is that most people seem to think the city does take it because on bin day when I go to drag my bins back up the driveway there’s always a few little plastic bags of poop in the green one. Sometimes they’re in the recycling bin which is just funny how lazy people are Well that’s my poop comments and I hope you had a lovely time reading them
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Feb 17, 2023 19:37
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HashtagGirlboss posted:I get picking up dog poop but I always feel weird about sending poop to the landfill in a little plastic bags to spend the next few millennia just being bagged dog poop instead of decomposing Somehow less lovely than your normal posts.
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Feb 17, 2023 19:42
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This whole conversation is poo poo.
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Feb 17, 2023 19:42
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