Back in the day the feature I liked most about my TI-82 was the amount of information that could fit on the display, the formatting options available, the ease of entering and editing what you entered, and the amount of past entered formulas that would be saved and how easy they were to retrieve. It made doing large blocks of basic BEDMAS math very quick and less suspectable to errors caused by accidentally hitting the wrong key entering in large formulas, and very easy to go back and find out where I messed up and quickly retabulate everything.

All of that mostly comes up in physics and chemistry were its about knowing what long formulas you need to plug the numbers you have available to you to find out what you need to know. Oddly enough their seems to be very little benefit to using a graphing calculator in a actual math class.

> BEDMAS

I think I figured out what the B stands for, but where I'm from, we call it PEDMAS - the P standing for Parentheses.