# Am I crazy to think this is crazy?

## Recommended Posts

Washington Post article on a new school math curriculum.

I do have to say that for German Kopfrechnen (mental math) you do break down the numbers into easier-to-digest groups for multiplication (not addition!). But you don't do that until you have a solid base of math facts. And you certainly don't do it in writing. Am I completely missing the point?

##### Share on other sites

Err...I teach my children to do this when they are doing math in their head but I think you should be able to do it "the old fashioned way" as well.

ETA: Just tonight we were having an allowance re-negotiation with the kids. My middle daughter asked: how much would that be for a year? I had her figure (in her head) 4 weeks in a month x the amount= X, X x 13= Y. We figured it faster than hubby could figure 52 x the amount.

##### Share on other sites

Well, yes. But that's multiplication, not addition. As I said, we learned to do that, as well.

I think what they mean is, for example:

234 + 377 = 200 + 30 + 4 + 300 + 70 + 7 = 200 + 300 + 100 + 4 +7 = 200 + 300 + 100 + 11 = 611

It seems like a lot of bother for nothing. It'd be much faster to just line up the two numbers and add down.

##### Share on other sites

This is how I would add using Singapore Math's method:

674+249

674+250=924 (I was able to figure that in my head)

then 924-1=923

I do that in my head a lot when I am in a supermarket. However, I did learn it the traditional way too. It sounds similar to Math-U-See(the article said about drawing pictures) or Singapore math using bar diagrams. The idea is to help a child understand mathematics not just memorize it. Math is everywhere and in everything. When we teach our children in more concrete ways, it helps them to grasp the abstract better.

Teaching 1+1=2 is abstract until a child see one box plus another box equals two boxes. So, the purpose of using pictures and diagrams is to help the child go from concrete to abstract faster. The child will grasp algebraic problems better instead of memorizing you put this formula here. They will better understand why the formula is being used.

No you are not crazy to think like this. It is understandable because it is different.

Blessings,

Karen

http://www.homeschoolblogger.com/testimony

##### Share on other sites

They call the Air Force guy a "homeschooling dad" because he bought \$100 of math books from Costco and Sam's Club. There's no mention of taking the kid out of public school.

Gosh, I wish that homeschooling were truly that easy. Go to Costco and buy some books. Mmmm...I agree that every parent is ultimately in charge of their child's education, but buying some books doesn't make you into a homeschooling parent. According to the State of Virginia, you aren't a homeschooling parent until you file the paperwork with your local school system.

Maybe I'm sore though because we've been at this for seven difficult years...!

##### Share on other sites

At least they realize there are problems with the current math.

##### Share on other sites

So to answer your question, you are not crazy but I feel that way too. Homeschool or public school I don't understand why parents are not jumping up and down in our town about this.

##### Share on other sites

There was something similar on the evening news last night. They mentioned that the United States ranked 24th in math in the world. I am curious to know what the top countries us for their math curriculums.

##### Share on other sites

Well, yes. But that's multiplication, not addition. As I said, we learned to do that, as well.

I think what they mean is, for example:

234 + 377 = 200 + 30 + 4 + 300 + 70 + 7 = 200 + 300 + 100 + 4 +7 = 200 + 300 + 100 + 11 = 611

It seems like a lot of bother for nothing. It'd be much faster to just line up the two numbers and add down.

I see what you're saying but I think people should learn both ways. Because 200+300=500, 30+70=100, 7+4=11 so the answer is 611 is easier to figure in your head. My kids use Horizons math which teaches addition (multiplication, etc) in the traditional way but they also do expanded notation which gives them a better grasp of math concepts.

On the other hand, I watched the youtube video and that is insane.

## Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

×   Pasted as rich text.   Paste as plain text instead

Only 75 emoji are allowed.