Casio Fx 115
Has a lot of 'cheat' button: derivatives, solution, log, fraction, percent, root. Got me through pre-calculus, physics, chemistry, and statistics. Converts fractions to decimal and vice versa with one button. Has so many more functions that I haven't used yet such as matrix. Easy to use, takes little time to get used to.
Casio Fx 115 Es
Far superior than Texas instrument. Lost mine after 5 years, so I replaced it because I needed it for chemistry in college. It's light-weight and robust. I dropped my first one multiple times and it still worked like new. Just can't graph, but of course its not suppose to.
Casio Fx 115
I recommend this product to anyone who needs a calculator! I used this calc for Algebra, and it did the job good. I had some lag on finding X values that took at least 45 seconds to come up with answer. When I went on to statistics, I was less than impressed.