Real Rapid Learning: Visual Multiplication

Submitted by: kamietsu 6 years ago in Science

What your math teachers didn"t want you to know.
There are 49 comments:
Female 28
i was enthusiastic about the first 30 seconds of the video and then my brain farted in multiples of 8.
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Male 907
This is really no different from the standard method, it just involves a lot of line drawing.
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Male 769
why would your math teachers not want you to know this?
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Male 2,376
her brain is kinda cute
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Male 792
...that`s how I learned to multiply large numbers is by multiplying all the possible pairs, then adding them up.
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Male 32
O_O......................
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Male 117
something about her voice is very annoying
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Male 3,745
"it stopped being visual multiplication the moment she wrote it down... idiot"

so are we just not supposed to have an example problem? learn 2 common sense plz
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Male 65
Cal. Cu. La. Tor.
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Male 2,855
it stopped being visual multiplication the moment she wrote it down... idiot
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Male 1,064
@wallywal

that`s her point, you noob
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Female 2,027
takes up alot of paper...
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Male 25,417
meh...
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Male 109
ahahah she sounds like she has braces, nerdlinger
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Male 45
that looks like it wastes more time than doing it regualr. jus because you sped the video p doesnt make it faster...
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Male 40,349
I :heart: Vi!
(see what I did there?)
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Male 303
Either do it that way and waste an entire sheet of paper per question or do it the old fashioned way if you need to show the work.
If no work is required, just get a calculator from a dollar store.
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Male 3,619
She does the same mistake my math teacher did and my parents and any grown person trying to explain you things

she talks too fast. i have to go back re-hear and enterpit the visuals to grasp it all
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Male 5,413
My this girl is AMAZING!
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Male 1,929
WTF? Why not just do it in your head?
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Male 296
then there`s always the calculator.
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Male 684
I like looking at it this way, but the traditional way is faster an easier...
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Male 270
I`m confused =(
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Male 157
I learned how to multiply in algebra. School system sucks hard.

7x6=(7x7-7)=42
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Male 383
She did not enunciate very clearly at all, it detracted from the message and irked me.
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Male 3,894
This is the first time I`ve been interested in math. I actually appreciate the orderliness of it.
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Male 2,172
Just use your fingers like everyone.

Chinese number gestures.
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Male 101
I wonder if she`s teaching math. I might have enjoyed it, then.
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Male 3,842
When she did 97 x 86, isn`t that EXACTLY the same as the traditional way to multiply that we were all taught in school? Digit by digit, placing the result in the tens (or hundreds) column and adding them together. How ELSE can you multiply?
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Male 15,187
I feel for this girl. I was like this in 3rd grade; I re-invented speed math in my head and skipped straight to the answer. I was right most of the time, but not always. The teacher thought I was lazy and guessing, didn`t understand the working and sent me to the principle`s office. EVERY DAY.

In the end though, my way of thinking lent itself better to solving commercial problems through computing, and she`s probably dead by now, so I have the last laugh.
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Male 5,314
this is so stupid
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Male 749
It doesn`t matter whether the `trick` is easier or not. The point was to look at multiplication in a different way. This video was a win.
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Male 688
"I could do the old fashioned multiplication a lot faster than I could draw grids and count dots or multiply every combo and keep track of zeroes! I`d bet most people watching would say the same."

Pretty much, I did the first problem in my head in about 3 seconds and the second in about 15.

Video is a waste of time.
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Male 802
That made me feel like some kind of genius. I can figure out all of those problems in my head way faster than drawing lines and dots then counting.
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Female 169
I make up stories about the numbers....that helps for me. or count the curves and corners when adding long chains of numbers
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Male 3,894
This is the first time I`ve been interested in math. I actually appreciate the orderliness of it.
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Male 11,739
If she didn`t talk at 2,000 words per second without breathing, it might be helpful. But this is pretty sucky.
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Female 6,381
I could do the old fashioned multiplication a lot faster than I could draw grids and count dots or multiply every combo and keep track of zeroes! I`d bet most people watching would say the same.
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Male 511
Or, I can pull out my phone or a calculator.
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Female 57
I think lattice multiplication is easier. This just seems impractical.
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Male 10,440
I have a math test next week on Sturm Liouville problems and this really helped.
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Male 74
You know at least one person is going to be convinced this is easier and is going to have notebooks filled with grids and dots.
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Male 678
This isn`t very practical. I`ll just stick with a calculator.
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Male 1,540
I like that she so seamlessly went from elementary school math to algebra by showing their relation in terms of practicality, which is what all good teachers should do.
Unfortunately I couldn`t get over the start of the video where she showed us "tricks" you can use to "simplify" multiplication, as in, turning a 20 second problem in to 2 minutes worth of drawing all over the paper and tediously counting up all the numbers, resulting in even more math problems like adding multiple large numbers. Ugh, just do it the way we were taught it`s the easiest.
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Male 302
Actually... I really like how she essentially turns 87*72 into (8x+7)(7x+2) where x=10... or more drawn out, 8764*3849 into (8x^3+7x^2+6x+4)(3x^3+8x^2+4x+9) where x=10. Longer, but a lot easier... at least to me.
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Male 39,603

huh?
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Male 10
because one of these days, I wont have a Cell Phone, Computer, or even a Calculator, But I will Be presented with a really hard Multiplication problem and Ill just Whip out my Trusty ol` Notebook and Pencil which I always keep with me and BAM! Math Problem = Solved!
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Male 373
Uh
I`m still trying to figure out her snake video
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Male 427
Link: Real Rapid Learning: Visual Multiplication [Rate Link] - What your math teachers didn`t want you to know.
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