1) The best graphing calculator for Algebra I through Calculus.
2)The easiest way to play games in school. Download specially made games for your TI-83 off the net or from another TI-83 and tell your teacher you're doing math homework when you're really PWNING your friend at space invaders
A graphing calculator ranking between the ti-83 and the ti-89. It can solve first degree equations, find zeros of polynomials, find solutions sets to simultaneous equations, and a lot of other spiffy things. Unlike the ti-89, however, it doesn't have a Computer Algebra System (CAS) and can't graph in three dimensions.
1. A far superior model to its counterpart, the ti-83. Can graph 3D functions, differentiate and integrate and calculate Taylor series. The symbol of a true math or science geek.