Extremely Silly Link

This is (apparently) the Pythagorean theorem sung in Swedish.
http://www.youtube.com/watch?v=OuqF45MLYFQ

It makes me wish I knew some Swedish. It seems to involve the proof, not just the theorem (which would make for a shorter song). I can't find out anything else about it. I can't quite read the letters on the diagram they're using, which might make more sense.

And now back to your regularly scheduled kid stories.

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