I don't understand why Americans teach Mathematics like this. I have a PhD in Mathematics and I struggle to see what the point of this is.
>>73534211
The children don't get it, the teachers don't get it, no one understands it
Why are administrators of education ironically the biggest idiots in the school system?
>>73534211
>I have a PhD in Mathematics and I struggle to see what the point of this is
Yeah I too have a PhD from Oxford and I just happen to post on 4chan in my spare time for all the stimulating discussion about the latest conspiracy theories and the jewish cuckolding theories.
>>73534704
im an army CPT with a masters and shit post on 4chan pretty often
>>73534704
You think you're being hilarious, but that is my current situation exactly.
It looks like this answer was written on top of an erased answer. I can't make out all of the erased answer, but I can tell the first word is "No".
It is possible that the student got it wrong and then after it was graded, erased the original answer and changed it.
The teacher could have put the estimate response to show the student that there was an easier way to come to the correct conclusion than whatever the student did to miss the answer.
>>73534897
High, Ryan
>>73534211
Wouldn't surprise me if a parent did this to show how stupid common core is and to get upvotes on facebook or something. It obviously said "No" originally.
>>73534211
Well it's kinda stupid with small numbers like that but I believe it's just to introduce students to the idea of "estimates" which are useful when dealing with larger numbers if you don't have a calculator handy (which is pretty unlikely in this day and age) and a quick rough estimate is needed.
>/pol/ falls for clickbait yet again
it's the parent being cheeky for upboats. you guys are fucking retarded.
>>73534211
I hate math because of my teachers here, will my fourth grade teacher because she didn't even try to teach it and in high school my geometry teacher sucked. Got mad when none of the class knew how to do a problem that we were just introduced to that day.
>>73534897
>im an army CPT with a masters and shit post on 4chan pretty often
I'm a Deputy gold sergeant first class general and I commandeer 5 entire battalions and I post every day on 4chan, I love /pol/
>>73534211
>>73535869
proof?
>>73534211
Estimation is more useful than approximation, unless you're sending rockets to space. You don't need to know 1,000 digits of pi to find the area of a circle. You just need to know that pi is around 3.
>>73534211
They want to condition kids to always be learning, and never "know".
There can never be a "true" way anymore. Only doubt and reevaluation.
>>73535932
How does a math minor not understand that?
>>73534211
Obvious fucking bait, some faggot erased what the student put after the fact, you can even see the erasures and where the student's first word was "No."
>>73535996
here's your estimated change sir
oh sorry is it short?
>>73535932
That actually makes a lot of sense though...
>>73534211
I hate common core as much as any other guy with a brain, however that looks to be like it was a question specifically suited to estimation. Estimation is something that they do teach in early schooling and you will be marked off for not doing it as much as it may annoy someone.
>>73534211
>USA
>having a clue about education
>>73534927
The point being that you must be a pathetic sack of shit if your credentials were any good and you posted on /pol/ of all places. This is basically a hangout for beta male teenagers to roleplay as alpha males since their real life sucks. So the possibility is either:
1. You're lying
2. You are such a sad sack of shit that this place is honestly a good hangout for you and the people here are intellectually stimulating to you.
3. You're just here to fuck with people
Those are your choices.
>>73536203
Yeah, you're short by two pennies which will sit between my couch cushions for years. Keep them.
>>73534211
As much as I think Common Core is shit, this is accurate if you're dealing with rounding numbers.
28 is rounded up to 30 because it's closer than 25, and 103 is rounded down to 100. So, 100 - 30 = 70.
>>73534211
Q. How dumb are American liberals?
A. They BROKE MATH!!!
Engineering students in EVERY OTHER COUNTRY must be laughing their fucking asses off!
>>73535932
>trying to write down every single bit of the thought process behind maths
This is to mathematics what reading is to writing.
>>73536180
affirmative action
>>73534211
>I have a PhD in Mathematics
$300k starting anywhere you want?
What's your discipline?
>>73536203
BTFO
>>73534211
niggers have low iq and muh white privilege
>>73536329
Listen to Ahmed, his kind invented algebra.
>>73534211
Common core mathematics is designed to "teach" what is the intuitive way we eventually do basic number operations. So as an adult, if we're asked 134,792 minus 789, we mentally round up the 789 to 800 (holding the credit of 11 to mentally add to the final result later on) and round by the 792 to 800 (holding the credit of 8) so that we arrive at 134,800 - 800 + 11 - 8 to arrive at 134, 803.
Notice how verbose this is to write, and how difficult it is to even explain, let alone teach. In the past, what we would teach kids is the carrying, which is seen in modern pedagogy as being an example of "rote learning" (i.e. a waste of time requiring hard work that could be spent better elsewhere), failing to note that the development of approximation and estimating is rooted on that principle.
Additionally, it's difficult to teach something that you yourself where never taught, especially with primary education. Furthermore, most primary school teachers are idiots, holding shitty degrees and who would be better suited as nursery staff.
>>73536608
134, 003 rather.
The question is pretty poorly worded, though. One doesn't need to estimate - the sum can be done in your head quite easily.
In fact, estimating in this case takes longer. The kid is right, if that's really his answer - 75 is a reasonable answer because it's literally the correct answer, and is demonstrably so from the question.
If you want to teach estimation, use large awkward numbers that arent easy to do in your head.
>>73536203
>cash
Are you 80 years old?
>>73534211
>I don't understand why Americans teach Mathematics like this
It's Satanic new-age garbage.
It's to remove objective literal truth and introduce objectivism.
Jesus Christ is the Word of God and said He is the truth (the Word of God is the truth).
This is why the world is inverted, backward and bullshit. It's being turned upside down.
It's also to allow racial quotas and for Communist teachers to give "minorities" creative marks for expressing themselves, regardless of what they write or do to the test sheet.
>little timmy got the answer right
>but he's white and didn't doodle basketballs on the paper
>so he gets 15/100
>little tyrone couldn't spell his name, but he said "man i dont know" which is quite creative
>also he's oppressed by whites so he gets 100/100
>wow take that, racist whites, looks like you're dumb and were wrong about intelligence links to race! look at these test scores! /pol/ BTFO
>>73535076
Hello Occam, I like your razor.
>>73534211
28 is close to 25 and 103 is close to 100 so yes 75 is an okay estimate.
Kid still got it wrong though because he didn't estimate
>>73536329
That's more or less correct, Africa aside.
What you gonna do about it, pussy?
>>73535932
This seems correct, but unneccesarily complicated. Why would anyone even do this?
>>73534211
>>73535076
>>73536188
He erased answer says :NO, b/c 75 is closer to 80 then 70.
But since that is correct the teacher would have marked it right. So it would mean that his new answer was made before she marked it
>>73534211
The common core standard doesn't tell the teacher to be a moron, they make that decision on their own.
It also doesn't tell schools to buy bad texbooks nor does it mandate the use of new math for the most part (some of the numberline stuff is not really classical arithmetic, but it's harmless).
>>73535932
no no no this teacher is clearly wrong :^)
it's easier to add 3 to 17 to make 20
23+20=43
>>73535932
This is fine. This is what long addition actually is. The difference is you didn't learn that. You just learned the shortcut of carrying over to the tens place. To you it's confusing because of that, but to a child it isn't.
This teaches critical thinking, which is all math is.
That's the point of common core. To make transition into calculus and abstract maths easier because they have a fundamental understanding of numbers rather than a bunch of shortcuts to an answer.
>>73534211
Estimation skills are taught somewhere between K-3. It was a horrible unit to learn and serves no prupose
>>73534211
>handwriting too neat to be a kid
>literally has indentations from where the kid pushed too hard when originally writing the wrong answer
>>73536404
His discipline is internet fraud and pepe collection.
>>73536330
>2. You are such a sad sack of shit that this place is honestly a good hangout for you and the people here are intellectually stimulating to you.
This is usually the situation and we like it that way.
Bye fag.
>>73535932
Wouldn't it be faster to just round up?
26+17 rounds up to 30+20
26 is 4 away from 30
17 is 3 away from 20.
30+20 is 50
4+3 is 7
50-7 = 43
>>73537002
implying this shit >>73535932
is easier than (20 + 10) + (6 + 7)
>>73534211
Tell me about your field anon.
You don't just do a PHD in "math."
>>73536361
that doesn't mean that 75 is not an acceptable estimation.
>>73534211
Reminder, it's all the kikes.
>>73537116
Be thankful that Europe will never establish such a fucktarded system.
>>73537081
Depends on your thought process, I've been moving a bit over to make a multiple of 10 since I was a child because that was natural for me.
>>73535552
Then you can do it on paper. Or draw it in the dirt if you have to. There is never a need to do something the lazy way.
>>73536758
My purchases can't be monitored. I have no accounts to be frozen and/or seized. Say hi to Big Brother for me.
>>73537237
That fucking nose though.
>>73537002
>critical thinking
>math
Top KeK
>>73537031
>handwriting too neat to be a kid
No, it isn't. How old do you think the kid answering the question was? 5?
>literally has indentations from where the kid pushed too hard when originally writing the wrong answer
He didn't get points off for answering wrong. -1 is not enough to indicate that. They gave partial credit and took points off for arriving at it the wrong way. The most likely scenario is the kid wrote one answer and then another. Whether he changed it before or after the grade, I don't know. The context of the grading tells me he changed it before he handed it in.
>>73536759
Pretty ironic. Xianity is the Common Core of religions.
>>73537518
Do you even know what critical thinking is?
>>73537080
>I will proudly admit that I am a dumb fuck lol
Good one, you sure showed me.
>>73537667
You're still here.
>>73536811
>Kid still got it wrong though because he didn't estimate
It didn't tell him to estimate.
>>73537116
It doesn't matter that it's easier.. It doesn't matter that carrying the one is easier either. That's not the point. You have to use the 6 because the 6 is in the ones place.
It's literally just breaking apart long addition. This is the exact same thing you do when you carry the 1.
The point isn't to make long addition easy and quick it's to show you whats actually happening, which surprisingly people don't grasp until they are in college. They can learn to use the shortcut of carrying the one without having to critically think at any point in their life.
anti-common core'ers are so fucking dense.
I'm against public education, but there's nothing wrong with the math section of common core. You can't teach math "wrongly". It doesn't work that way.
>>73537731
Yes. I'm here to mock you. And you're here to be my bitch and try to save face.
>>73536878
>africa aside
Africa literally might as well not exist
>>73537919
Okay bro
>>73536330
Well it's not option 1), in any case.
>>73536404
>$300k starting anywhere you want?
ahahahaha. you'll learn.
>>73537986
The world would unarguably be a better place if it no longer existed, but it still does.
>>73536608
>Furthermore, most primary school teachers are idiots, holding shitty degrees and who would be better suited as nursery staff.
christ, so much this.
>>73537457
No problem. I've got time, as all my transactions take less than 20 seconds.
>>73534211
It is literally because they are totally confused about why nothing they have done has managed to eliminate the racial achievement gap. They are trying anything and everything to reach these keedz.
>>73538009
>taking the time to prove a personal claim on /pol/
Everybody point and laugh.
>>73536330
>let me tell you what /pol/ is
No, that is what YOU are. Stop projecting.
>>73534897
What unit?
>>73536330
what a sad existence you must experience. Expect more for yourself. You are a God, dont forget that.
>>73537778
you are correct. time to deport that teacher into a mass grave
>>73537655
>Critical thinking
Not being a meth head and assuming, because my way of describing things has been institutionalised, is the only right way.
>inb4 everything can be described mathematically
>>73538125
It's kind of terrifying when you think that the people who are teaching the absolute basic foundations of our entire knowledge base to our children, are literal idiots. Primary education is where kids learn to fucking read, learn the basics of grammar, learn basic number operation, and start to learn some reasoning skills. It's the springboard on which everything else is fundamentally based, really, and we're letting people who whored themselves out at University and who likely got 3rds to teach them these things.
>>73536390
kek
>>73538285
No, thats you getting your shit pushed in
>>73538020
Your shitpost-fu is weak, sheepfucker.
>>73537237
>I actually checked Google to see if the nose was photoshopped in or not
It's not.
>>73534897
Herbal jew got me kicked out. I dont have any excuse but I was pissed cuz I was 6mo from my 2nd extension finishing and me getting out. Zero tolerance when theyre trying to downsize.
>>73538009
You look like a fag and your shit's all retarded, good day, sir.
>>73535997
It's the exact opposite of what you just said. The goal of current educational system is to indoctrinate people with a certain worldview and never ever question it.
Always asking questions, living in doubt and reevaluating is what actually smart people do.
>>73534211
I'm a 6'4, 10/10 chef at Wendy's making well over 120k a year. AMA
>>73534211
The fags over at Reddit already debunked this one Mr. Mathematician. Someone erased what the kid actually wrote then wrote in a correct answer to make the teacher look like a cunt and to earn more upboats.
>>73534211
>>73534506
>>73534704
>>73534897
>>73534927
>>73535076
>>73535403
>>73535471
>5
>>73535552
>>73535798
>>73535853
>>73535869
>>73535932
>>73535976
>>73535996
>>73535997
>>73536180
>>73536203
>>73536188
ITS FAKKEEEE
YOU CAN CLEARLY SEE SOMEONE ERASED IT AND REWROTE OVER IT
>>73538009
Hahaha....HAHAHAHAHA. Definitely a 2), then.
>>73539063
>And so...?
Its nice b8
>>73539063
Its a sad day when you must explain to /pol/ that fact checking is a basic shit
>>73534897
THREAD ATTEN-SHUN!!
>>73538836
>how do i read IDs guys im new here
>>73536329
>No Africa
Good map though.
>>73534897
Why do military people always think everyone understands their acronyms?
>>73539151
Making personal attacks on an anonymous imageboard shows that you are the retard. Not him.
>>73537201
it wasn't an estimation. the student showed their work, and they didn't estimate.
hate on teaching estimation if you want, but the student did not estimate.
this isn't really related to common core anyway.
>>73534211
I'm so sick of what this board has become. It's a fucking tublr blog for those that don't fit the politically correct mold, which doesn't necessarily mean they are right.
Case in point is OP's bullshit. I don't like common core but this is like clickbait.
>HEY GUISE LOOK WHAT RANDOM PERSON DID OR SAID AND LET"S PRETEND IT IS REPRESENTATIVE OF THE PREVAILING STATE OF THINGS!
Fuck off with your cherry picked anecdotal facebook tier bullshit. There were retarded teachers before and after common core. Taking for granted you aren't underage b&, you are the byproduct of a previous generation of education and your stupid post is evidence of how little things have changed.
>>73534211
Sadly this is why I will home school my children.
There I a video floating around online somewhere iirc that has a guy admitting in a public hearing that common core was designed to fight white privilege. I think he was a Jew too. Makes you wonder why /pol/ is almost always right.
>>73540727
Yeah I'm on mobile so I'm not gonna bother finding it but just search "common core white privilege" and you'll find it.
The cuck that designed it was speaking to a group of parents who booed him pretty loudly when he said that. And with good reason, it's literally designed to make white kids as dumb as other minority kids.
