Anonymous wrote:

Anonymous wrote:Well that explains why my son doesn't know what I'm talking about when I keep writing out his problems and telling him to "carry the 1." -HS math teacher helping my own child

As a PP noted, it's now called regrouping. Get a Singapore Math book. It explains it all, or you can just google it. As the PP noted, it is pretty much the same thing.

This is a website recommended by an mcps 2nd grade math teacher. If you look at how they add, they use carry the over, which they simply call "regrouping".
http://www.coolmath4kids.com/addition/05-addition-lesson-two-digit-numbers-01.html


The below site is interesting... shows all the different ways to teach addition. Note the "partial sums" method. It's basically regrouping, or carrying the one, but slightly expanded.
http://diggingdeeperintomath.blogspot.com/2012/09/singapore-math-addition-strategies.html

Yep. When you see your kid come home with this you (or your kid) can usually find a video on Youtube to show you how to explain it to them - assuming they don't "get it" at school. Many kids do.

Anonymous wrote:We've taught our kids addition (carrying), subtraction (borrowing) and are working on multi-digit multiplication and long division the way we were taught. We do also tell them they need to learn how the school teaches them math /
That the school way is also important. I can see why CC helps with being able to do more in their head but as they get into higher math concepts it's also beneficial and can be quicker to use other methodologies.

They do eventually learn the standard algorithm in ES. By end of 3rd, my DC was using the standard way. Now in 5th compacted math, they use mostly the standard way. There are slight differences, however. They still have to do it fairly quickly, though. They are timed on their tests.

Anonymous wrote:Well that explains why my son doesn't know what I'm talking about when I keep writing out his problems and telling him to "carry the 1." -HS math teacher helping my own child

As a PP noted, it's now called regrouping. Get a Singapore Math book. It explains it all, or you can just google it. As the PP noted, it is pretty much the same thing.

This is a website recommended by an mcps 2nd grade math teacher. If you look at how they add, they use carry the over, which they simply call "regrouping".
http://www.coolmath4kids.com/addition/05-addition-lesson-two-digit-numbers-01.html


The below site is interesting... shows all the different ways to teach addition. Note the "partial sums" method. It's basically regrouping, or carrying the one, but slightly expanded.
http://diggingdeeperintomath.blogspot.com/2012/09/singapore-math-addition-strategies.html

Anonymous wrote:

Anonymous wrote:I was doing fractions and long division with decimels in 2nd grade in the 80s. This is the dumbing down of america. I doubt any child outside of GT/AAP can do this in 2nd grade now.

AAP doesn't start until third, but my now AAP kids certainly weren't doing long division with decimals in 2nd. They didn't get multiplication facts until late 2nd to work on the summer between 2nd and third. And I certainly wasn't doing this in 2nd either. Either you are misremembering, or your school experience just wasn't standard.

Silver spring 80s. We had GT but i wasnt in it. Just the clique of more advanced kids. The regular kids i know did long division in 3rd grade, a year afterwards.

We've taught our kids addition (carrying), subtraction (borrowing) and are working on multi-digit multiplication and long division the way we were taught. We do also tell them they need to learn how the school teaches them math /
That the school way is also important. I can see why CC helps with being able to do more in their head but as they get into higher math concepts it's also beneficial and can be quicker to use other methodologies.

Well that explains why my son doesn't know what I'm talking about when I keep writing out his problems and telling him to "carry the 1." -HS math teacher helping my own child

Anonymous wrote:I was doing fractions and long division with decimels in 2nd grade in the 80s. This is the dumbing down of america. I doubt any child outside of GT/AAP can do this in 2nd grade now.

AAP doesn't start until third, but my now AAP kids certainly weren't doing long division with decimals in 2nd. They didn't get multiplication facts until late 2nd to work on the summer between 2nd and third. And I certainly wasn't doing this in 2nd either. Either you are misremembering, or your school experience just wasn't standard.

OP just wait until you hit multiplication of two + digit numbers. Your kids are drawing lattices all over their math homework that will make zero sense to you.

Anonymous wrote:I was doing fractions and long division with decimels in 2nd grade in the 80s. This is the dumbing down of america. I doubt any child outside of GT/AAP can do this in 2nd grade now.

Boy I wasn't and they put me into advanced math at that age. This was in Fairfax County in the 70's.

Anonymous wrote:Seriously, for those of you new to it: they are doing an incredible job teaching math these days. My kids are faster and have deeper understanding than we ever did, but they way they got there is very different. And now I can look back and see the beauty and brilliance of it all.

ITA! I have older kids who started common core around 5th grade. My youngest is in 3rd and pretty much had CC from the start. Her understanding and ability to explain concepts is far above where they were at her age(they are GT so not like she's Einstein compared to them lol). I was a big skeptic when CC was first introduced but I'm a believer now. Give it a chance.

NP here. It is true that new math/common core math tries to emphasize the conceptual, but it overdoes it. I can see spending a day doing regrouping this way but then, MOVE ON to the simplest, most efficient way possible. This kind of teaching assumes that kids need constant reminders about the concepts and it absolutely slows down the stronger students and, in fact, by adding multiple steps, often introduces more opportunities for the conceptually quick but absent-minded kid to make mistakes.

Wait till you get to long division, OP. Seriously. Google common core long division. It will give you pause. Thankfully Virginia doesn't have the Common Core and our school teaches algorithms in a fairly old school way (after introducing concepts of course!).

I was doing fractions and long division with decimels in 2nd grade in the 80s. This is the dumbing down of america. I doubt any child outside of GT/AAP can do this in 2nd grade now.

It's frustrating for kids to learn one way from the teacher and another way from the parents.

My son is in 2nd grade. He did that method you describe which looked correct, but arrived at the wrong number. I think it's dumb they don't teach them the way we were taught as kids.

Anonymous wrote:

Anonymous wrote:

It's a crock of shit and will ruin many kids for math.

I guess you say this because it is not the way you were taught.
But, it actually does help kids understand what they are doing when they are adding.
I am likely older than you, and when I was taught math in elementary it didn’t make sense to me.
So, I would come home and my dad would “reteach” me - my dad, who had his masters in physics.
He actually taught me to add left to right. Doing this helped me understand the algorithm.
A good teacher knows how to help kids understand what they are doing.

I'm in my mid 50s. Back when math was math and age-appropriate. I know many kids who just are picking up this math fad, partly because it is too abstract at a young age and that teachers don't really understand how to teach it.

And fuck the fact that they want parents to go to training on this. How many kids is THAT going to SCREW OVER?