TI-83/84 Programs
Programs for the TI-83/84 written by Michael Lloyd of Henderson State University. It includes College Algebra/PreCalculus, Trigonometry/PreCalculus, Probability/Statistics, Linear Algebra & Calculus.

If you are doing math and don't have a TI Programmable Calculator, you are at a disadvantage.
Texas Instruments TI-83 Plus Graphing Calculator; 64 H x 96mm W Screen
          College Algebra, Precalculus & Calculus
          Differential Equations, Probability & Statistics
  TI-84 Calculator Tutorials