I saw this this morning and found it fascinating. Haven't tried it but it looks like it would work. Leave it to the Japanese to come up with a brilliant concept. With much practice, I am guessing that one will not need any paper.
How's your multiplication?
- Thread starter Brian D
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Now, let's got to India. Trust the answers are correct else the teacher would make corrects. Watch the first kid's left hand.
I read hand signs...
They were saying: "Teacher was showing them the answers and they were ready for recess."
Jim...
Not to be pragmatic, but the calculator app in my phone is much simpler to use. When I was young my father taught me to use an "abacus" and later in college I became proficient with the "slide rule" but what really all this told me is that these are all tools and to use the best one that is available.
Those are so cool. But I want to learn to do what Arthur Benjamin does.
Here's a link to his Ted Talk https://www.ted.com/talks/arthur_be...-b&utm_medium=referral&utm_source=tedcomshare
He uses a combination of mnemonics and abacus style groupings.
-Will (Dragonfly)
He uses a combination of mnemonics and abacus style groupings.
-Will (Dragonfly)
sooooo.. can he raise a number to something like a 2/3 power? as some of us have had to?
Sure. He just has to raise to 1/3 power twice. Or is it, square the number and divide by 3? Maybe he could raise to 1/3 power then square it? Or, is it the other way around?
I DON'T FRIGGIN' KNOW!
But
that's an increasing (edit: interesting) question.
-Will (Dragonfly)
I DON'T FRIGGIN' KNOW!
But
that's an increasing (edit: interesting) question
.-Will (Dragonfly)
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That's too cool. Makes me want to go back to teaching math just so I can demonstrate that however, it would probably be frowned on by admin because it wouldn't be on the state mandated tests. Don't get me started. Wrong forum.