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Cool Math Video

A New way (to me at least) to do complex multiplication

Comments

allanh
Apr. 20th, 2010 12:31 am (UTC)
That's how *I* was taught multiplication in grammar school. This would have been in the late '60s/early '70s at the University of Chicago Laboratory School.

Only after we'd mastered this method, were we allowed to use the "traditional" multiply+carry method.

After I'm-not-counting-how-many-years of using the "traditional" method, I'm still faster and more accurate with the method shown in the video.


aelfie
Apr. 26th, 2010 07:18 pm (UTC)
Oh. And it also means not doing things like asking them to identify things (i.e their letters) or doing anything vaguely academic like singing the alphabet song. Learning starts at First grade. Not before.

Now this doesn't mean you stamp down on them if they figure something out. I didn't teach either of the girls how to write their name, they figured it out on their own, just through osmosis. I neither encourage them to write it nor to practice. If they want to do so, they can, but there's no pressure from me for them to do so.

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