The downvotes are ignorant. See Lockhart's Mathematician's Lament, where he laments the state of math education comparing it to learning music through sheet mus

The downvotes are ignorant. See Lockhart's Mathematician's Lament, where he laments the state of math education comparing it to learning music through sheet music and not pickings up an actual instrument. He asks how to visualize the area of a triangle by bounding it in a rectangle, where it becomes obvious that the triangle takes up half the area. He then poses the question about the volume of a pyramid where you can use a similar technique. https://www.maa.org/external_archive/devlin/LockhartsLament.pdf https://www.maa.org/external_archive/devlin/LockhartsLament....