For offline sections of Calculus for Business:  A graphing calculator.
    If you do not already own a graphing calculator, buy a TI-83.  It sells for about $90 and can be obtained at many chain stores including Office Max, Office Depot, Best Buy, etc.  There is a similar (but more expensive) calculator called the TI-83 plus.  This calculator is also fine, but not necessary.  I will be using a TI-83 in class and if you have the same calculator it will be easier to follow along. The new TI-84 plus is essentially the same calculator as the TI-83, so it is fine.
     If you already own a TI-83, TI-86, TI-89  TI-92 plus or a Casio CFX-9850 GB PLUS, you are fine.  If you own a TI-82, TI-92 , TI-85, or an HP 48G or HP 48GX,  you do not need to buy a new calculator, but you will have to enter programs into your calculator that will enhance its capabilities.   I will be able to provide instruction on use of the TI-83, TI-83 PLUS,  TI-84 PLUS, TI-89, TI-92, and TI-92 PLUS.  Students with other calculators mentioned above are on their own as far as learning how to use them.

For College Algebra, Trigonometry, Precalculus, Geometry for Education, Calculus I, Calculus II and online sections of Calculus for Business: A scientific calculator.
    Graphing calculators are prohibited.  A cheap ($9-$20) scientific calculator is all you need.  If you are not sure how to tell if a calculator is scientific, it must have a key labeled SIN to be scientific. The only scientific calculators that you may not use are the Casio FX-115 (ES or MS Plus), the Casio FX-300 (ES or MS Plus), any Sharp Write View calculator, and any TI MultiView calculator.

For Social Choice Math and Finite Math: A calculator with a square root button.
   Graphing calculators are prohibited.  Scientific calculators are permitted, but not required.

For Differential Equations: No calculators permitted. (Sorry, it is a departmental policy.)