In some classes we were allowed to bring in our own formula sheets. We could write whatever we wanted on a single sheet of paper (both sides). So of course we c

In some classes we were allowed to bring in our own formula sheets. We could write whatever we wanted on a single sheet of paper (both sides). So of course we condensed the entire course to fit on that with tiny writing. But after putting in all that effort to make this sheet, I rarely even looked at in during the test. I didn't need to -- the act of making it made it stick in my brain.