For College Algebra, Trigonometry, Precalculus Algebra & Trigonometry, Geometry for Education,
Calculus I and Calculus II: A scientific calculator.
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-82ES, FX-83ES, FX 85ES, Casio FX-115 (ES, MS, ES Plus or MS Plus), Casio FX-300 (ES, MS, ES Plus or MS Plus), Casio FX-350 (ES, MS, ES Plus or MS Plus), Casio FX-570ES, any Sharp Write View calculator, the TI-36X Pro and the TI-30 MultiView calculator. Graphing calculators and programmable calculators are not permitted. If you have to purchase a calculator, I recommend the TI-30XA.
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.)