First  Prev  1  2  3  4  Next  Last
Post Reply Common Core Math
14233 cr points
Send Message: Send PM GB Post
M / USA
Offline
Posted 3/13/15
My mom works at a high school in the math department. She said all across the county the scores have plummeted due to this common core crap. The new consumable text books are fill in the blank rather than actual textbooks. Very little material for reference. It's a mess.
23469 cr points
Send Message: Send PM GB Post
24 / M / Iowa >.>
Offline
Posted 3/13/15 , edited 3/13/15
what the hell is the grid style? I was helping my 12 year old cousin and she was making a grid to solve a multiplication problem.... it looked confusing as hell, what are they teaching kids these days? it took her 5 minuets to solve a problem that would have taken less than 30 seconds to solve the "old fashioned" way



this looks like it takes more work and more space to do
Dragon
58342 cr points
Send Message: Send PM GB Post
37 / M
Online
Posted 3/13/15 , edited 3/13/15
Common Core math is basically how I learned how to do math anyway from what I've heard, so I don't see the problem with it. Managed a BS in math (as well as computer science) in 3 years, so I guess that way of doing it isn't all bad.
49109 cr points
Send Message: Send PM GB Post
Offline
Posted 3/13/15
I too was taught the new math in 1964.My parents were bewildered and so was I.I was lucky enough to marry a math major so getting through college math was no problem, except working closely together we kept on having children..
8345 cr points
Send Message: Send PM GB Post
24 / M / UK
Offline
Posted 3/13/15

tf2pyros wrote:

I'm out of High School, but what the hell is the point of this. It's slightly old news, but I never got to the nitty-gritty of it.

Please tell me why 2 + 2 = 4 is now wrong.


How come thats wrong?

Im not from the US so im a bit ignorant of the US education system. What is common core?
Dragon
58342 cr points
Send Message: Send PM GB Post
37 / M
Online
Posted 3/13/15

Scooty-Bby wrote:

Im not from the US so im a bit ignorant of the US education system. What is common core?


Some new-ish standards that some US states adopted. The math stuff seems to have a lot of folks up in a fuss, but they're not really new techniques. http://en.wikipedia.org/wiki/Common_Core_State_Standards_Initiative

There's also a lot of confusion over if it covers history or not (it doesn't, except as part of the language/literacy studies).
23206 cr points
Send Message: Send PM GB Post
27 / M / Long Island
Offline
Posted 3/13/15
I tried helping my 7 year old nephew with his homework, I had no idea what to do.
14642 cr points
Send Message: Send PM GB Post
21 / F / US of A
Offline
Posted 3/13/15
I guess this is useful for some kids, but this breaks the math down a bit too much for my impatient brain. In real life, they're gonna use calculators anyway...
10 cr points
Send Message: Send PM GB Post
22 / F
Offline
Posted 3/13/15

Shwuishu wrote:

I guess this is useful for some kids, but this breaks the math down a bit too much for my impatient brain. In real life, they're gonna use calculators anyway...


I'm from Italy and last year I attended a school in the US, if there's one thing I really hated about the American school system was the frequent use of calculators even to do the simplest operations.
In my native country nobody ever uses calculators for anything (in math classes) and although it is undeniable that students are going to use calculators in real life it is also true that getting to rely on them for everything makes you unable to reason through a problem thoroughly with your own little brain
85255 cr points
Send Message: Send PM GB Post
27 / M / Louisville, KY
Online
Posted 3/13/15

tf2pyros wrote:

I'm out of High School, but what the hell is the point of this. It's slightly old news, but I never got to the nitty-gritty of it.

Please tell me why 2 + 2 = 4 is now wrong.


My sister is in 3rd grade and to teach them division they are drawing pictures and if they say 21/3 = 7 they get it wrong because they didn't do it the common core way... it's so dumb. Basically, now you have to draw 2 images and then draw 2 more images and now you have 4 images yey!
17380 cr points
Send Message: Send PM GB Post
23 / M
Offline
Posted 3/13/15 , edited 3/13/15
I don't know what common core is.
I'm of the opinion that a mathematician with a doctorate should be developing the standards in math.
Or at least somebody close to that.
None of the examples given in this thread seem too out of place to me.
The estimation example seems odd, but they called it front-end estimation, so I'm guessing back-end estimation would be 300 + 400 = 700
which gives them an upper bound on their solution. So if they do both front- end estimation and back-end estimation, they'd know their answer is between 700 and 500, and then if you use the tens digits as well, the estimation would get more precise, and so on.
These look like simple things to aid comprehension.
Then again, what do I know about what the schools are doing.
Also- It's a good idea to have people with math-related degrees teach math, because they know the material inside and out.
I'd actually like to see statistics on how student comprehension relates to their teacher's degree.
35017 cr points
Send Message: Send PM GB Post
F
Offline
Posted 3/13/15 , edited 3/13/15
Let's break the two methods for solving that subtraction problem down into steps and things to remember:

Stacked Method:

1. Arrange your two figures so that their ones places, tens places, and so on are aligned.

568
293

2. Starting at the rightmost digit, perform an individual subtraction. Continue to do this moving leftward.

568
293
-----
??5

3. If you should find that the result of any individual subtraction is a negative value you must instead borrow. Add ten to the top digit and subtract one from the digit immediately to its left.

4 16 8
293
------
275

Common Core Method

1. Arrange your digits so that they're in alignment as in the stacked method.

568
293

2. Starting at the leftmost digit in the figure to be subtracted, perform an individual subtraction of the number that digit represents from the figure being subtracted from. Continue to do this moving rightward in the amount to be subtracted, substituting the result of the previous subtraction for the amount to be subtracted from.

568
200
-----
368

368
90
-----
278

278
3
-----
275

The disadvantage of the common core method which makes it so abhorrent isn't popping out at me. It delivers an accurate result and avoids confusion for having forgotten to borrow. Its primary weakness is that it is slightly more demanding on one's short term memory.
24859 cr points
Send Message: Send PM GB Post
21 / F / Bay Area
Online
Posted 3/13/15
That's why everyone thinks 9+10=21

1145 cr points
Send Message: Send PM GB Post
17 / F / In your house or...
Offline
Posted 3/13/15

Swaggercandy wrote:

That's why everyone thinks 9+10=21



1656 cr points
Send Message: Send PM GB Post
15 / F
Offline
Posted 3/13/15
Common core seems so stupid. I'm glad I don't have to go through that. I really don't get the point of it. How does it make anything easier?
First  Prev  1  2  3  4  Next  Last
You must be logged in to post.