Easy Graphical Multiplication Trick How to transform a multiplication into a simple counting of
points
through the drawing of a square shape (original analogy
was with a stool). It works with any numbers if you keep the right partition.
If you use a zero, use a dotted line. When a
dotted line cross another dotted line or a plain line, count
zero. You can verify with your calculator!
It's only
meant to be a funny trick to show to kids not to be
an efficient way to do
multiplication.
It's not a way to make mental multiplications easier, it's just a fuuny way to resolve graphically a multiplication. It's only meant to be a little trick to show to friends and kids who hate maths. It's NOT meant to be efficient as some seems to think. You can do any kind of multiplication with it but yes it's boring to draw numbers like 8 or 9.
I didn't invented it but i would proud to because it's simple esthetic way to show the basic mechanism of a multiplication. You need to be quite clever to make this kind of trick.
My girlfriend learned it from some math teacher during her school years in china. He wanted to make kids interesed in maths and it worked. (In some china school, kids use stools to sit. That why he used this comparison for the shape of the network).
For all those who talk crap about this video: This one of the highest ranked of the week and one of the biggest gain of the producer program in such short time. I made 2000$ in 4 days. If you're so good to put disdainful comments, why don't you make a better vid instead of wasting text here ?
For those who enjoyed it, keep having fun! :)
It will be easy for you to understand how to do this after you will watch the video !
The Link: http://www.metacafe.co.il/watch/296904/easy_graphical_multiplication_trick/