> Figure out how high your school building is with math and without going to the roof and a loooong "tape measure"? That was cool! Especially since we actually

> Figure out how high your school building is with math and without going to the roof and a loooong "tape measure"? That was cool! Especially since we actually went outside and did it. I still find it incredible that "Daumensprung" [0] is apparently not an international concept (I learned about this in Math class growing up in Germany). Unfortunately the Wikipedia link is only in German, but the short explanation is: * Extend your arm horizontally in front of you, and raise the thumb to point upwards. * Close one eye and align the thumb with the edge of a large object in the distance (e.g. a building). * Close the other eye and note how far the thumb virtually "jumped" across the large object. Now, knowing the distance between your eyes and the length of your arm, you can use trigonometry to either * knowing the distance to the object, deduce the width of it or * knowing the width of the object (e.g. using a window, doorframe, or car as a reference size), deduce the distance to it. [0] https://de.wikipedia.org/wiki/Daumensprung https://de.wikipedia.org/wiki/Daumensprung