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re: Mental Math Genius Claims Humans Are Being Taught Math Incorrectly
Posted on 2/26/13 at 2:19 pm to mizzoukills
Posted on 2/26/13 at 2:19 pm to mizzoukills
quote:
Sao,
Refer to NCrawler's post near the top of page 3 to decipher this message. XOR code is: soup
It must be potato soup - because that's as far as I can apparently count
1
Posted on 2/26/13 at 2:20 pm to Sao
Sao,
You'd like the message. Hint...start with binary first...
You'd like the message. Hint...start with binary first...
Posted on 2/26/13 at 2:22 pm to mizzoukills
quote:
Scott Flansburg, the proclaimed Human Calculator, claims that humans are wired to do math but we have been taught math incorrectly.
Sure
quote:
Mr. Flansburg said that in most cultures, the natural tendency is to read from left to right. However, for some reason mathematicians have developed a mathematical system that sums numbers from right to left, requiring the "carry over" technique which makes mental math difficult for most people.
It's easier to teach, and no one teaches mental math. Plus it makes subtraction easier.
quote:
Instead of using a system based on 1 - 10, Scott uses a system based on 0 - 9.
I'm not sure how our system is based on 1-10 now but whatever.
quote:
Also, he and a few scientists have used perfect numbers to create geometrically perfect diagrams that when recreated in fields of wheat have interfered with natural magnetic fields. They believe that by creating mathematically perfect diagrams anywhere in the universe, we affect the universe at a quantum level because it is governed by quantitative laws.
May explain portals, time travel, etc.
What the hell does this even mean? How can numbers that are the sum of its divisors that aren't itself explain time travel? What the frick does 6 do to explain a damn portal?
This just seems like a guy trying to sound smart.
I think a class on mental math would be awesome. It could have a final exam where the teacher calls on individual students and makes them do stuff like 47*63 in 6 seconds
Posted on 2/26/13 at 2:26 pm to mizzoukills
It took me roughly the same time (15 seconds) to add using both methods. It's possible that this method would work a little easier/faster initially for kids who just start learning addition of several numbers, but for those of us who have already learned it I don't think it's any faster.
Another point: this method only addresses addition, not math in general. How would you account for subtraction of the following using the left-to-right method?
63292
-45608
______
Another point: this method only addresses addition, not math in general. How would you account for subtraction of the following using the left-to-right method?
63292
-45608
______
Posted on 2/26/13 at 2:28 pm to CockHolliday
I believe that for subtraction, multiplication, and division he uses matrix's
Posted on 2/26/13 at 2:30 pm to CockHolliday
For mental math,
63292 + 4392
-(45608 + 4392)
67684
-50000
17684
63292 + 4392
-(45608 + 4392)
67684
-50000
17684
Posted on 2/26/13 at 2:44 pm to The White Lobster
quote:
For mental math,
63292 + 4392
-(45608 + 4392)
67684
-50000
17684
You're still subtracting 45608 from 50000, which you couldn't effectively do going left-to-right.
Posted on 2/26/13 at 2:50 pm to CockHolliday
I guess I really kind of am
50000 - 45608
10000 - 5608
(I know the tens through thousands digits have to add to 9 in each spot and the ones have to sum to 10, so left to right or right to left works)
(9-5)*1000+(9-6)*100+(9-0)*10+(10-8)*1
4392
50000 - 45608
10000 - 5608
(I know the tens through thousands digits have to add to 9 in each spot and the ones have to sum to 10, so left to right or right to left works)
(9-5)*1000+(9-6)*100+(9-0)*10+(10-8)*1
4392
Posted on 2/26/13 at 2:50 pm to CockHolliday
I'm not sure how he does it yet, which is why I plan to buy his book. It's only like $10 at B&N.
I'm curious of his method as well.
I'm curious of his method as well.
This post was edited on 2/26/13 at 2:51 pm
Posted on 2/26/13 at 2:55 pm to mizzoukills
quote:
I'm curious of his method as well.
I think his method of getting you to buy his book is genius, I will say that...
Posted on 2/26/13 at 2:57 pm to Sao
quote:
I think his method of getting you to buy his book is genius, I will say that...
That guy is an all around genius. I'll spend $10 on a book, even if it ends up being a waste.
I think it'll be awesome, though. The critical reviews are through the roof!
Posted on 2/26/13 at 3:00 pm to mizzoukills
I wish I were a genius about something very particular.
Have you ever thought of a good invention and didn't run with it? What was the idea?
Posted on 2/26/13 at 3:03 pm to Sao
Actually, I have. More than once. And I was about to act on it when I discovered my exact invention (mind you, it was EXACTLY the same design as my invention) in an on-campus bookstore.
Needless to say that I was extremely paranoid that someone I knew discovered my designs...
Needless to say that I was extremely paranoid that someone I knew discovered my designs...
Posted on 2/26/13 at 3:05 pm to mizzoukills
Have you had any new revelations since then? What was it?
Posted on 2/26/13 at 3:25 pm to Sao
Back in college I was in the computer lab working on a research paper throughout the night. I was working off of notes that I'd hand written in a notebook. Copying the information from the notebook to the word document on the computer was getting old, so I ripped out the pages and folded them in half long ways. That made the paper notes rigid enough to stand up right next to the computer screen. It made it far easier for my eyes to bounce back and forth between the notes and the computer screen.
Then it hit me. What if I created something that you could slide paper notes into that would force a slight curve in the paper to make it rigid enough to stand up. It would need to be compact enough to carry in a book bag.
I designed a plastic half egg with a curved slice in it - flat on the bottom. I would fill it with sand or water to make it heavy enough to hold quite a few pages of paper without toppling over.
I got so far as to arranging a meeting with a manufacturer.
Then the new semester came. I went to the bookstore to purchase my books.
On the counter was my exact design. It made me sick.
Then it hit me. What if I created something that you could slide paper notes into that would force a slight curve in the paper to make it rigid enough to stand up. It would need to be compact enough to carry in a book bag.
I designed a plastic half egg with a curved slice in it - flat on the bottom. I would fill it with sand or water to make it heavy enough to hold quite a few pages of paper without toppling over.
I got so far as to arranging a meeting with a manufacturer.
Then the new semester came. I went to the bookstore to purchase my books.
On the counter was my exact design. It made me sick.
Posted on 2/26/13 at 3:33 pm to mizzoukills
Posted on 2/26/13 at 4:04 pm to mizzoukills
I was just wonderig who all other than me has math degrees? Not trying to sound uppity or like I am smarter or anything. (shocking that I'm not trying to flame isn't it.)
I'm just curious because I don't meet to many math people who also love football enough to be on this board.
I'm just curious because I don't meet to many math people who also love football enough to be on this board.
This post was edited on 2/26/13 at 4:05 pm
Posted on 2/26/13 at 4:13 pm to CheeseburgerEddie
About to graduate with a degree in EE and a math minor. I don't really find this whole mental math thing that interesting though. I like using Matlab for everyhing.
Posted on 2/26/13 at 4:13 pm to CheeseburgerEddie
I love math, but got my degree in Business Entrepreneurship instead.
My mother has a Masters in Math. My aunt a Masters in Math. My uncle a degree in Aeronautical Engineering. My grandfather a degree in both Nuclear Physics and Math.
Needless to say that I come from a Math family...
My mother has a Masters in Math. My aunt a Masters in Math. My uncle a degree in Aeronautical Engineering. My grandfather a degree in both Nuclear Physics and Math.
Needless to say that I come from a Math family...
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