It’s Mathemagic!
I’m often rather disturbed by how mathematics is taught in school. Take, for example, the way I was taught the following (important) equation:

Those of you familiar with calculus will immediately recognize what this means. Those of you who aren’t should know that the above set of squiggly lines means something very important in the upper levels of confusing math.
When I first was taught the equation I was taught it by being exposed to it exactly as I just exposed it to you: an equation. There were some words with it too, but they made just as much sense as the equation did at the time. A few moments later the teacher explained what the equation means: one can find the definite integral of an equation using its antiderivatives.
But we were never taught why that’s the case.