This has probably been covered already but…
WTF is this bullshit!!!
It seems like math for people who can’t grokk math.
Can’t they just put all the slower kids in a different class and teach them common core?
Question: 7*3
7+7+7=21 WRONG
3+3+3+3+3+3+3=21 RIGHT
Has common core eliminated the commutative property of multiplication?
Also acceptable is making 7 rows of three dots (bit not making 3 rows of 7 dots) and then counting the number of dots.
What the fuckity fuck fuck?
Dude, what decade are you living in?
Also, who told you that was Common Core?
Depends on the context and how one wishes to integrate mathematics into young peoples’ lives.
7*3 == 3+3+3+3+3+3+3 == 21
3*7 == 7+7+7 == 21
They equal the same thing, yes. But having seven three dollar bills is obviously not the same as having three seven dollar bills, even when your total is 21 dollars.
Unless, of course, you’re suggesting that the commutative property is never introduced or explored at all in CC math.
Angry idiots who have no idea what “common core” actually entails, and are pissed off at badly-written worksheets.
I’m not sure what you’re getting at. This is my first exposure to Common Core Math. I didn’t realize how dumbed down it was.
The school district, I think. Am I wrong somehow because other posters seem to think that this is indeed representative of common core.
Sorry, just this complaint is like 10 years old now 
This is the answer:
Who exactly told you that what you were looking at is mandated by the Common Core standards?
OK, so explain to me why 7*3 need be be seven groups of 3 rather than 7 repeated three times? You are creating an arbitrary convention and calling it math. And in the process you are ignoring the commutative property. One of the first and most fundamental conceptual mathematical notions.
AFAICT, this is waving the white flag on math and just dumbing it down to the lowest possible denominator.
May I ask what your exposure to it entailed?
Also, at least the kiddies are counting dots, there’s a logic to that. In my day Sr. Doris just made us memorize them and recite them aloud. Over and over again.
So explain to me why one is wrong and the other is right?
First you explain why you think that is representative of the Common Core standards.
As others have said, I think you are confusing one badly written worksheet with the whole of Common Core. Common Core Third Grade requirements for multiplication:
The only part that comes close is the part I bolded in red. The intent of the section is to ground the symbols that are being taught to real world situations. That should be applied to word problems and not just a number problem with no context.
Overall, I like the direction common core is going. It integrates algebraic concepts throughout, rather than springing on them in grade 9. It also strives to improve number sense and finding strategies as opposed rote algorithm application.
ETA: The bolded green part covers teh commutative property as well.
The fact that one lousy teacher demands that 7x3 be 3+3+3+3+3+3+3 and not 7+7+7, does not mean all teachers teach the same way, nor does it mean that “common core” math demands this.
Anyway, what does 7 times 3 mean if not “7 times” the number “3?”
IIRC later on, algebra and such, you apply commutative property at the risk of getting the whole equation wrong.
CMC fnord!
I’m just learning what common core is now.
So in the last ten years have we seen improvement in the US global math rankings?
NOPE! We have been sliding even further behind.
So then why are we sliding further behind those countries that are using the old outdated antiquated math?
The teacher told me that this is the methodology required by the school district.
Apparently learning the multiplication table is a waste of time.
Memorization generally is not regarded as learning.
Memorization is essential to learning. In much the same way that muscle memory slows down the game or slows down a fight (see martial arts), brain memory also slows down the math game and lets you operate at a higher level.
I only ask because you weren’t clear about where you saw this. It could have been on a child’s homework assignment. It could have been on rightwingoutrage dot com, how do I know?
My kid just started bringing home homework that included this stuff. I don’t know if Common Core gets less stupid later on.
Once you understand what multiplication is, there is really no need to keep making graph papers full of dots and counting them out.
After that it is in fact about memorization.
My kid’s math homework looks like an art project.
In order for me to be properly outraged, I’m going to need to see the context in which this is marked “WRONG.”
That is true scottsman bullshit.
If that is the way it is being taught then that is common core.
Well if they actually grade it like this then I can see why you’re upset. Do they really mark the first answer as wrong?
Why can’t it mean “7 three times”?