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Dr. Arbitrary
Mar 15, 2006

Bleak Gremlin

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Magres
Jul 14, 2011
But... but those aren't actually the same notes :psyduck:

Evrart Claire
Jan 11, 2008

shalcar posted:

It's also important to note that the second method fits beautifully into basic algebra and gives a grounding that children who have this method will already understand while those who only do the first won't.

Teaching is more complicated than just picking an "optimal" method and being able to build into advanced concepts is a huge bonus.

It's also really valuable to be able to look at problems multiple ways like that easily when working with a lot of modular operations like in number theory or cryptography, etc, or when working with stuff like algebraic structures where subtraction itself sometimes isn't treated as a valid operation.

peak debt
Mar 11, 2001
b& :(
Nap Ghost
It seems educational the way bubblesort is educational for computer science. You look at it once, figure out why it works, then figure out why despite of working it's not a good idea to do it that way, then discard it for the better method.
It should be possible to show that method to a class of 8-10 year olds, ask them why it's not a good method and get some decent answers back. Or make them solve some homework with either method to teach them the value of a solution with higher investment but bigger return. It certainly beats the teaching style of "this is how it was always done and therefore you must do it this way".

But if you actually plan to teach that second method in an expectation to use it for practical work :gonk:

VideoTapir
Oct 18, 2005

He'll tire eventually.
Victoria Jackson's toolbox has one hammer in it, and that is all.

Mornacale
Dec 19, 2007

n=y where
y=hope and n=folly,
prospects=lies, win=lose,

self=Pirates

peak debt posted:

It seems educational the way bubblesort is educational for computer science. You look at it once, figure out why it works, then figure out why despite of working it's not a good idea to do it that way, then discard it for the better method.
It should be possible to show that method to a class of 8-10 year olds, ask them why it's not a good method and get some decent answers back. Or make them solve some homework with either method to teach them the value of a solution with higher investment but bigger return. It certainly beats the teaching style of "this is how it was always done and therefore you must do it this way".

But if you actually plan to teach that second method in an expectation to use it for practical work :gonk:

You've already heard several people in this thread (and I'll add to them) pointing out that the second method is actually extremely similar to shorthand ways that we do mental arithmetic, and how it points toward other useful skills for real mathematics.

For practical work, use a calculator.

Walter
Jul 3, 2003

We think they're great. In a grand, mystical, neopolitical sense, these guys have a real message in their music. They don't, however, have neat names like me and Bono.

VideoTapir posted:

Victoria Jackson's toolbox has one hammer in it, and that is all.

I think it's safe to say Victoria Jackson's toolbox has seven sockets with no ratchet or indication of metric or Imperial, and a rusty Phillips screwdriver with the tip too chewed up to actually be effective.

Walter fucked around with this message at 10:46 on Mar 4, 2014

peter banana
Sep 2, 2008

Feminism is a socialist, anti-family, political movement that encourages women to leave their husbands, kill their children, practice witchcraft, destroy capitalism and become lesbians.
huh. funny I just saw this video a few days ago, decrying the typical order of operations and encouraging curriculum which stresses the relationships between numbers.

https://www.youtube.com/watch?v=y9h1oqv21Vs

menino
Jul 27, 2006

Pon De Floor
Has anyone tried to teach the new method? Can it be done within a reasonable timeframe versus the old method? Parents Against Common Core just go :freep: over anything that's remotely new for ARE CHILDRENS, but I can see a 2nd grade teacher with a 80% reduced-lunch class looking at that and going 'gently caress this'

Breadallelogram
Oct 9, 2012


Magres posted:

But... but those aren't actually the same notes :psyduck:

You're getting from point A to point B a different way.

"Back in my day we didn't practice our scales in thirds!!!"

Centripetal Horse
Nov 22, 2009

Fuck money, get GBS

This could have bought you a half a tank of gas, lmfao -
Love, gromdul

menino posted:

Has anyone tried to teach the new method? Can it be done within a reasonable timeframe versus the old method? Parents Against Common Core just go :freep: over anything that's remotely new for ARE CHILDRENS, but I can see a 2nd grade teacher with a 80% reduced-lunch class looking at that and going 'gently caress this'

I don't know anything about this "new" method, and the bit I saw earlier in the thread looked pretty loving stupid to me, but I know enough to know that I don't know poo poo about how to teach math to kids. One of the most glaring flaws in Freepers seems to be that they have no idea exactly it is they don't know.

On top of that, is their bizarre inability to see that just because something was done some particular way in 19xx does not mean that it should continue to be that way for the rest of eternity. It's so bizarre to watch how they totally flip out at nearly every societal change of any kind, yet they don't seem to be in a hurry to give up their plasma televisions, cell phones, and SUVs. I don't think "conservative" is accurate. I think the proper term is somewhere between "stationary" and "regressive."

Hello Sailor
May 3, 2006

we're all mad here

Centripetal Horse posted:

I don't know anything about this "new" method, and the bit I saw earlier in the thread looked pretty loving stupid to me, but I know enough to know that I don't know poo poo about how to teach math to kids. One of the most glaring flaws in Freepers seems to be that they have no idea exactly it is they don't know.

When it comes to education, you also run into a lot of parents who feel that their experience in parenting their children means they're somehow more qualified to educate their children than "the system" that shows teachers how to educate a variety of children. If one of the parents doesn't work, this generally leads to home-schooling.

babies havin rabies
Feb 24, 2006

It just makes parents feel stupid when they can't do their 2nd grader's homework. I don't understand things and being challenged to understand them makes me angry! The government put the things there! Make the bad thing go away!

Mitchicon
Nov 3, 2006

Dr. Arbitrary posted:

The cool thing about the bottom one is that it's basically:
1. Start with the smaller number. (12)
2.Add some amount to turn the number into something that's easier to work with. (12 +3 = 15) You could also do 8 if you wanted to. It's up to the creative whim of the student.
3. Add some amount to turn the number into something that's easier to work with again. (15 +5 = 20) See how cool this is? It's an iterative process, just like Newton's method of finding roots.
4. Add some more to try and get it close to the desired result of 32. (20 + 10 = 30)
5. Add the rest. (30 + 2 = 32)
6. Add all the numbers in the center column and you have your answer.

Here's another cool thing you may not have noticed. In the entire algorithm you don't subtract even a single time. Also, if the problem had been 32 - 13 there's no change except step 2 would have been (13 + 2 = 15)

Both methods are valuable and they teach children that there are different ways to solve problems. This is vital in order to succeed with higher level math. You can't just expect an algorithm when you're doing integration. You have to try things and move stuff around in ways that make it easier for you.

I just wanted to say this is a really good explanation and I can see the value in it. The cool thing is I've always done something like this mentally and I like that it is being taught.

mlnhd
Jun 4, 2002

babies havin rabies posted:

It just makes parents feel stupid when they can't do their 2nd grader's homework. I don't understand things and being challenged to understand them makes me angry! The government put the things there! Make the bad thing go away!

If parents can't help their kids with homework, then the kids will be even more dependent on Daddy Government. Just what the liberals want!

Swarmin Swedes
Oct 22, 2008

menino posted:

Has anyone tried to teach the new method? Can it be done within a reasonable timeframe versus the old method? Parents Against Common Core just go :freep: over anything that's remotely new for ARE CHILDRENS, but I can see a 2nd grade teacher with a 80% reduced-lunch class looking at that and going 'gently caress this'

I am a K-5 ESL teacher but I have worked with the new method(s) with my kids and it takes a little while for the older kids to move away from the way they had learned but once it clicks it seems to really help.

The common core has a lot of problems IMO but the way math is being taught is not one of those, it took me a little while before I was comfortable teaching it conceptually but it is really a great way to look at problems different ways.

There is plenty to criticize with Common Core and it's implementation but like with Obama conservatives and freepers are freaking out about the wrong thing the new "math" or the "common core is teaching our kids to be gay" complaints are the birth certificate or Benghazi of the common core criticisms.

SavageBastard
Nov 16, 2007
Professional Lurker

Hello Sailor posted:

When it comes to education, you also run into a lot of parents who feel that their experience in parenting their children means they're somehow more qualified to educate their children than "the system" that shows teachers how to educate a variety of children. If one of the parents doesn't work, this generally leads to home-schooling.

As a parent of two I can tell you that if you are sending your kid to school and then not also homeschooling them you are failing them. There is a lot of "least common denominator" and the books my daughter brings home are insultingly easy for her. We ask for tougher material and are ignored. She comes home to school break with instructions to "read ten minutes a day" and I have to pretend to try to make her only read ten minutes a day which she thinks is hilarious and gets her rebel fix by reading more. We have workbooks at home to try to push her further but I'm worried that common core is just going to hold her back if this one pace of learning thing is really going to be the norm.

menino
Jul 27, 2006

Pon De Floor

Swarmin Swedes posted:

I am a K-5 ESL teacher but I have worked with the new method(s) with my kids and it takes a little while for the older kids to move away from the way they had learned but once it clicks it seems to really help.

The common core has a lot of problems IMO but the way math is being taught is not one of those, it took me a little while before I was comfortable teaching it conceptually but it is really a great way to look at problems different ways.

There is plenty to criticize with Common Core and it's implementation but like with Obama conservatives and freepers are freaking out about the wrong thing the new "math" or the "common core is teaching our kids to be gay" complaints are the birth certificate or Benghazi of the common core criticisms.

OK, thanks for that. It certainly looks like a valuable long term way to look at math I was just wondering if it was feasible to get kids to grasp in the classroom.

Swarmin Swedes
Oct 22, 2008

menino posted:

OK, thanks for that. It certainly looks like a valuable long term way to look at math I was just wondering if it was feasible to get kids to grasp in the classroom.

I met some resistance with my 5th graders because they had been taught the "traditional" way but the younger kids seemed fine with it and seemed to grasp it fairly well, they may not be able to make the choice of which method is best but they can grasp the concepts and those concepts can provide that background for when they are more developed and will need to use the different methods.

boner confessor
Apr 25, 2013

by R. Guyovich

SavageBastard posted:

As a parent of two I can tell you that if you are sending your kid to school and then not also homeschooling them you are failing them. There is a lot of "least common denominator" and the books my daughter brings home are insultingly easy for her. We ask for tougher material and are ignored. She comes home to school break with instructions to "read ten minutes a day" and I have to pretend to try to make her only read ten minutes a day which she thinks is hilarious and gets her rebel fix by reading more. We have workbooks at home to try to push her further but I'm worried that common core is just going to hold her back if this one pace of learning thing is really going to be the norm.

Public schools teaching to the lowest common denominator long predates common core.

hamster_style
Nov 24, 2004
neenjah!
This is the dumbest poo poo. My cousin who has been active duty in the Army for the last 8+ years posted this. He's lost friends in the war, and suffers from PTSD, yet inexplicably loving loves George Bush. I really don't get it.



Edit : may as well put this one here too. Crazy Uncle, different side of the family(I'm surrounded).

hamster_style fucked around with this message at 18:00 on Mar 4, 2014

TerminalSaint
Apr 21, 2007


Where must we go...

we who wander this Wasteland in search of our better selves?
That reminds me of the wounded veteran collecting donations so his wife could meet her Hero, George Bush.

Thomas13206
Jun 18, 2013

hamster_style posted:

This is the dumbest poo poo. My cousin who has been active duty in the Army for the last 8+ years posted this. He's lost friends in the war, and suffers from PTSD, yet inexplicably loving loves George Bush. I really don't get it.



Post this

http://news.bbc.co.uk/2/hi/1392791.stm

quote:


Presidents George Bush and Vladimir Putin have met for the first time and appear to have hit it off.

The two men still differ over enlarging Nato and US missile defence plans, but they exchanged warm words. They say they found the basis for a relationship of mutual respect.

At the end of their first summit meeting in Slovenia Mr Bush described Mr Putin as a straightforward and trustworthy man.

"I looked the man in the eye. I found him to be very straight forward and trustworthy and we had a very good dialogue.

"I was able to get a sense of his soul.

"He's a man deeply committed to his country and the best interests of his country and I appreciate very much the frank dialogue and that's the beginning of a very constructive relationship," Mr Bush said.

Discendo Vox
Mar 21, 2013

This does not make sense when, again, aggregate indicia also indicate improvements. The belief that things are worse is false. It remains false.

hamster_style posted:

This is the dumbest poo poo. My cousin who has been active duty in the Army for the last 8+ years posted this. He's lost friends in the war, and suffers from PTSD, yet inexplicably loving loves George Bush. I really don't get it.



Edit : may as well put this one here too. Crazy Uncle, different side of the family(I'm surrounded).



Your cousin likely interprets attacks on Bush and his decisions in the war on terror as an attack on the military, and an attack on your cousin himself. He feels compelled to defend Bush as a proxy for himself. It's a common problem in attacks on "the troops".

Amused to Death
Aug 10, 2009

google "The Night Witches", and prepare for :stare:

hamster_style posted:

This is the dumbest poo poo. My cousin who has been active duty in the Army for the last 8+ years posted this. He's lost friends in the war, and suffers from PTSD, yet inexplicably loving loves George Bush. I really don't get it.



I remember when we cowboyed it up and attacked Russia after Russia attacked the western allied Georgia in 2008



wait a minute......

Spaghett
May 2, 2007

Spooked ya...

hamster_style posted:


Edit : may as well put this one here too. Crazy Uncle, different side of the family(I'm surrounded).



I unironically want to live in a world where all foliage is edible, trippy as gently caress, and looks to be made of candy, but I'm a dumb libtard stoner so idk.

muscles like this!
Jan 17, 2005


The stupid thing about those photo comparisons (not THOSE exactly but what they're drawing from) is how the Putin ones are obviously staged propaganda-y images while the Obama pictures are usually taken from him just doing something that's not a photo op.

gradenko_2000
Oct 5, 2010

HELL SERPENT
Lipstick Apathy
If it were Obama riding a grizzly bear barechested none of those people would believe it, just as they don't believe it when it's Kim-Jong Il doing something similarly ridiculous. But then it's Putin so it's different and totally plausible and legit because

Mitchicon
Nov 3, 2006

muscles like this? posted:

The stupid thing about those photo comparisons (not THOSE exactly but what they're drawing from) is how the Putin ones are obviously staged propaganda-y images while the Obama pictures are usually taken from him just doing something that's not a photo op.

Republicans are literally upset that Obama isn't engaging in nationalistic propaganda. You know who else liked nationalistic propaganda? :godwin:

MisterBadIdea
Oct 9, 2012

Anything?
Remember how brave and decisive George W. Bush killed Osama Bin Laden?

Mitchicon
Nov 3, 2006

MisterBadIdea posted:

Remember how brave and decisive George W. Bush killed Osama Bin Laden?

Remember how brave and decisive George W. Bush reacted when he was told the twin towers were hit?

DoctorWhat
Nov 18, 2011

A little privacy, please?
Hey the D&D helps D&D D&D thread seems to have vanished so I'll ask here:

My dad seems to have gotten the idea into his head that "Government doesn't invest, it spends". He's a smart guy but he's been fed anti-government hypercapitalist propaganda all his life. Does anyone have some straightforward, mathematically provable examples to the contrary?

Swan Oat
Oct 9, 2012

I was selected for my skill.
Polio was eradicated in the US thanks in large part to the CDC making the vaccine widely available. Is eradicating polio ~spending~ or an investment?

DoctorWhat
Nov 18, 2011

A little privacy, please?

Swan Oat posted:

Polio was eradicated in the US thanks in large part to the CDC making the vaccine widely available. Is eradicating polio ~spending~ or an investment?

Thanks but this is too ~sensationalist~ and lacks direct dollar values. I'm looking for, like, spreadsheets.

Boywhiz88
Sep 11, 2005

floating 26" off da ground. BURR!

DoctorWhat posted:

Thanks but this is too ~sensationalist~ and lacks direct dollar values. I'm looking for, like, spreadsheets.

The closest you would get is the chart that breaks down ROI for government spending and shows that SNAP provides a return of 150%.

Nyarai
Jul 19, 2012

Jenn here.
Didn't Bill Clinton bail out Mexico, and then the Mexican government paid the loan back a few years later with interest? Even if the Mexican government earned the money through villainous taxes <:mad:>, that's still an ROI for the US.

boner confessor
Apr 25, 2013

by R. Guyovich

DoctorWhat posted:

Hey the D&D helps D&D D&D thread seems to have vanished so I'll ask here:

My dad seems to have gotten the idea into his head that "Government doesn't invest, it spends". He's a smart guy but he's been fed anti-government hypercapitalist propaganda all his life. Does anyone have some straightforward, mathematically provable examples to the contrary?

This would be difficult because he's certainly going to take a moral stance on the numbers. Such as the idea that the government taxes, the free market just reinvests profits. They're both functionally the same but there's a moral difference, you see, because government just skims off the top and doesn't create blah blah etc.

If he doesn't already see the incredibly obvious similarities between business and government spending then it's because he chooses not to. You should address that, and you're not going to be able to do that with a spreadsheet.

Like there's no real objective way to say that coke is good and pepsi is poo poo. They're the same thing, an organization which uses money to accomplish (profits/social good), but try convincing a dedicated coke drinker that pepsi is in the same category.

darthbob88
Oct 13, 2011

YOSPOS

Boywhiz88 posted:

The closest you would get is the chart that breaks down ROI for government spending and shows that SNAP provides a return of 150%.

Yeah, I don't think there's much government spending that actually returns directly to the government, loans aside. What you get are more like "By spending $Lots on public health, the government prevented millions of man-hours from being lost to sickness, thus saving/producing an extra $Lots of economic activity, which the government taxes to make a profit", or "By spending $Oodles on public education, the government helps/enables/encourages workers to become more skilled and obtain higher-paying employment, providing a return on investment in the form of taxes paid", or "Food stamps are an injection of money into the economy, stimulating consumer spending and expanding the economy sufficiently that taxes on the growth exceed spending on food stamps".

boner confessor
Apr 25, 2013

by R. Guyovich

darthbob88 posted:

Yeah, I don't think there's much government spending that actually returns directly to the government, loans aside. What you get are more like "By spending $Lots on public health, the government prevented millions of man-hours from being lost to sickness, thus saving/producing an extra $Lots of economic activity, which the government taxes to make a profit", or "By spending $Oodles on public education, the government helps/enables/encourages workers to become more skilled and obtain higher-paying employment, providing a return on investment in the form of taxes paid", or "Food stamps are an injection of money into the economy, stimulating consumer spending and expanding the economy sufficiently that taxes on the growth exceed spending on food stamps".

A more concrete example would be infrastructure. The government spent money to build the highways, which then allowed new growth and development which would eventually return in a higher tax base. Functionally it's the same as a huge software company producing their own framework for other firms to use and generate revenue, some of which would eventually end up back in huge company's pockets.

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Foyes36
Oct 23, 2005

Food fight!

DoctorWhat posted:

Hey the D&D helps D&D D&D thread seems to have vanished so I'll ask here:

My dad seems to have gotten the idea into his head that "Government doesn't invest, it spends". He's a smart guy but he's been fed anti-government hypercapitalist propaganda all his life. Does anyone have some straightforward, mathematically provable examples to the contrary?

Probably not, people like that tend to retrench and dig deeper when presented with evidence and arguments that go against their worldview.

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