Pascal’s triangle, for me, is an example of a problem or structure that I have returned to many times since I first encountered it in middle school. There are many other patterns inside Pascal’s ...

It is Pascal's Triangle, the pyramid of numbers in which the series in the next line is given by adding together adjacent pairs in the line above to generate 1, 1 1, 1 2 1, 1 3 3 1, 1 4 6 4 1, and ...

Space to play or pause, M to mute, left and right arrows to seek, up and down arrows for volume. Pretend you're me and you're in math class. Actually, never mind. I'm sick, so I'm staying home today.