Here are a few videos on Pythagorean Theorem.
The first video explains itself.
The second video shows students working with a 3-4-5 triangle. I wish they had used the orange, purple and green paper a second time for the squares that they cut up.
The third video works with the 3-4-5 triangle again.
The last video shows that attached to the triangle do not have to be squares but could be semi-circles etc. If you are short on time, show the first video and the last one.
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