This calculator is appropriate for all courses at COS where calculators are required.

The TI-30Xa is a solid solution for general math, algebra, trigonometry and statistics. Calculator has variable statistics to include results for mean and standard deviation and is useful to add, subtract, multiply and divide fractions entered in traditional numerals. Battery powered. Slide-on case is included.
 

Approximate Cost: 
$11.00  -$15.00

This calculator is appropriate for all courses at COS where graphing calculators are allowed. Recommended for students who want a graphing utility and are on a track toward statistics.

TI-83—TI's most popular graphing calculator—enhanced with 160K flash ROM for electronic upgrades and new applications, and 24K RAM. It also has an eight-line, 16-character display, and seven different graphing styles including such functions as financial, calculus, trigonometry, equation solving, statistical, graphic, forecasting, engineering, logarithms, hyperbolic and slide rule.

Approximate Cost: 
$100.00  -$115.00

For an extra $20.00 - $30.00 consider the TI-84 Plus, keystroke-for-keystroke the same as the TI-83 with expanded capabilities like a built-in USB port, 3x the memory,  many preloaded Apps and an improved display.

This calculator is appropriate for all courses at COS where handheld CAS  systems are allowed. Recommended for the serious science student but it may not be allowed on exams and has a steep learning curve!

Easily calculate derivatives and integrals, limits, maximum/minimum, sequences and series. Solve equations including systems of linear and nonlinear equations. Differential equations can be solved numerically, symbolically, and graphically including slope and directional fields. Advanced statistics functionality including multiple regressions/tests/intervals, ANOVA 2-way, and goodness of fit. Physical constants and unit conversions—great for Engineering and Physics. Powerful vector and matrix calculations and functions. Calculation of eigenvalues and eigenvectors.

Approximate Cost: 
$152.00  -$175.00

Built-in USB port!