Whiteboard explanation of how to calculate the square root of 2 without a calculator.. can be done with ruler compass and pencil
Duration : 0:9:40
[youtube 1jot45uXilE]
Calculating the Square Root of Two
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now that’s funny!
now that’s funny!
how can you change …
how can you change a square root to a decimal?
how can I symling …
how can I symling square root of 32 to fragment?
ya i learned it in …
ya i learned it in 5th grade
yeah!
I wasn’t … 
I wasn’t joking, we really did learn that back then..schools are kind of hard here compared to the rest of the world…dont know why they do it, but eh, if it helps me later in life, i dont mind
yeah!
You guys learns …
You guys learns than in elementary school?!? We arent learning Pythagorean Theorem for a couple more days.
ROFL
ROFL
A square root is …
A square root is biologically impossible.
We learned that in …
nice of you to show this to other people!
We learned that in elementary school, it’s quite easy, Pitagora theorem is quite handful
This was good. I …
This was good. I became interested in the square root of seven. I learned to draw a nine square grid. 7 lies between area 4 and 9. Since it was closer to 9 than 4, the square root of seven had to be greater than 2.5. I still have to learn to simplest way to calculate to decimal.
im going to say 1 …
im going to say 1 think…
your really smart.
This is just using …
This is just using string, markers, and some knitting needles to hold the string. It does not use any other measuring instruments.
A bit lengthy, and …
A bit lengthy, and I would have chosen a more interesting application than just calculating sqrt(2) for it’s own sake. With a little bit of algebra you can construct a regular pentagon with ruler and compass. But you can’t for instance construct the third root of 2 by this means, which can be shown with some work and a bit of field theory.
well i thought it …
well i thought it was good. The relationships between objects in math are much more interesting than a simple formula that only describes one perspective on reality.
is that square ruth
is that square ruth
pretty basic …
pretty basic knowledge everybody knows, nothing new its just using Pythagoras…