This Calculator is the prescribed standard edition calculator that our school specifies and requires we purchase for school. The Cassio Fx82es is a really simple calculator which follows basic function principles. The general appearance of this calculator is no frills as it doesn't really look too fancy and complicated but not quite stylish either. The calculator features a variety of modes that enable you to work with complex equations using variables and so on. What was a real life saver for me was the Functions mode button which enables you to type in an equation for a particular function graph and plot a few points and it processes all the information and displays the co-ordinates in a neat table(One column for the "x's" and one for the "y's"). The fractions button is also very good as now you can enter fractions as they appear in test and examinations without having to convert them to decimals oh and it even finds the LCD(Lowest Common Denominator) for you. The battery life on this calculator is excellent I've had it since Grade 10 and it's still going strong. We really have to thank the good people at Cassio for giving as a weapon to wage war on Maths and Science what a great calculator.