Texas Instruments TI-84 Plus Silver Edition Graphing Calculator
This calculator is probably the most popular in the K12 system, right along with the TI-83. The TI-84 offers some minor improvements over its younger brother:a USBport and clock functionality. It has slightly faster processing as well, due to a higher speed Z80 CPU. This popular calculator offers 2D, polar, and parametric plotting. It does not have a computer algebra system, so don't expect to be able to perform anything symbolic like simplifying equations, at least without external software that can be downloaded. On this calculator, finding limits, derivatives, and integrals can only be done graphically, not symbolically. It can do slope and definite integrals only with limited non-symbolic accuracy, so it probably can't help you with most true calculus homework. Of course, plotting is helpful. This calculator can be used on the ACT, SAT, and APCalculus tests, among other standardized tests listed at the TIwebsite.