We won't know - there won't be starships with the Romulans running the system...

It's not to teach them math... it's to teach them that the "authority" is wiser than they are - they will have the correct answers... even if (and when) they're wrong - and therefore should be listened to, obeyed, and revered.

Tom Lehrer explains it in "The New Math":
https://www.youtube.com/watch?v=UIKGV2cT...

Picard would say, "Beam me up, Scotty!" No, wait. Wrong generation. I must have tried to do common core math here.

I wonder if Picard would have survived the current educational establishment?

There are FOUR lights!

Captain Picard while held hostage by Cardassians in "Chain of Command". Just watched it again a couple of weeks ago. Hooray for Netflix!

Not anyone who wants to move up into algebra, geometry, or calculus. This kind of nonsense would bog you down to the point of insanity.

Agreed. Please spread this link to the speech on CC by Dr. Duke Pesta far and wide.
http://youtu.be/Si-kx5-MKSE
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I was helping my daughters (one year apart in school but same math class) factor polynomials last night - that's breaking x^2 + 4x + 4 into (x + 2)(x + 2). A full SIX of the twelve problems were polynomials which could not be factored down - ie they were bogus questions. Then I looked at the bottom of the page as to whom made the questions: Common Core. I just shook my head and told my kids that they should tell their teacher to proof all the assignments before handing them out. They need to focus more on the math and less on the ideology.

probably because "correct and incorrect" is so clearly defined in mathematics. CC history, CC literature, just like environmentalism disguised as the CC natural sciences are all easier to manipulate into the statist's ideology. You need to be an expert (or at least and educated layman) in those fields to wave the BS flag. Basic math is easy for everyone to understand. When the fundamentals are being manipulated and distorted, it is easy to identify.
We have a difficult task ahead to dismember Common Core because it is tied to government funding.

I absolutely loved Esda's base thirteen answer above. The CC teachers likely have no idea what that means, because they are not educated to understand the concepts, just to indoctrinate.

Cheers

Bravo! Too bad the whole concept of systems other than base-10 would be beyond most of our elementary school teachers nowadays (even tho we were exposed to it in 4th grade)...

Apparently, the student was smarter than the teacher, who was trying to teach the kid A≠A.

Of course, the teacher is the "authority figure" the student must (by mandate and dictate) obey...

"There are five lights." Guess the reference.

Ok, first let me preface this by saying if you teaching this as a math class, the question is bogus. If your teaching this as a "
Creative Problem Solving Puzzle" I totally understand this. https://www.youtube.com/watch?v=epR-NvH6...

The problem is in the context of the question. Is this math or creative problem solving. I would pose the teacher could be said to be wrong. Why not take 5 from the 8 and add 5+5,= 10, then add the 3 remaining from the 8. Government in its effort to "try" to do good does nothing but screw things up.

WHy is it that almost everybody looks at CC math and stops there. Math is just the tip of a monstrous Iceberg.

http://youtu.be/Si-kx5-MKSE

You still come up with thirteen at the end. Ten becomes an intermediate step. There's no reason even to think of intermediate steps. They always told me they wanted a final answer.

Insanity, no one actually thinks that way. Do they??

Exactly

The goal is to keep them confused and feeling inadequate... and to rely on other, "smarter" people who understand these things and just do what they say is best.

LOL

lol

Sure rounding up or down for mental computation. But that comes after one knows the basics of adding and subtracting, as you've stated. This is beyond the grasp of an 8 or 9 year old. Especially if the foundation has never been taught. Ugh!!

And by then, the poor student will have gone off the deep end. There are signs popping up all over our town opposing Common Core. Momentum!

Which she can teach after a three martini lunch, for all the sense it makes. 🍸🍸🍸

I actually do math in my head this way, but it isn't the way I was taught. It's easier to convert the terms into 10s and 100s and 1000s and shift the small change into the end. However, teaching you to do this from the beginning of math lessons is a mistake because if you can't quickly add a single digit number to a two digit number by sight, you are in trouble. This method is a timesaver when we're talking about numbers two digits and greater, but with such a trivial example, it's actually just adding a lot of overhead to the process - making you think "math is confusing and hard". This is a shortcut that should be taught around the same time when they're teaching how to estimate sums rather than calculating precise sums.

Easy. Use base 13. Then 8 + 5 = 10.