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Texas Instruments Nspire CX CAS Graphing Calculator The sleek TINspire CX handheld is the thinnest and lightest TI graphing calculator model to date Overlay and colorcode math and science concepts on digital images or your own photos The installed TINspire Rechargeable Battery is expected to last up to two weeks of normal use on a single charge Colorcode equations, objects, points and lines on the fullcolor, backlit display Graph and rotate (manually and automatically) 3D functions, Oneyear limited warranty. Standardized testing organizations have approved the TINspire CX CAS handheld for SAT, PSAT/NMSQT, AP and Praxis highstakes exams. It is also approved for some state exams. 
Hewlett Packard Prime Graphing Calculator HPPrime™ is a featurerich calculating experience with familiar HP keypad and a large 3.5inch diagonal, multitouch full color display. Explore math concepts with Dynamic Geometry, CAS, Advanced Graphing, and spreadsheet applications. HPPrime™ employs familiar RPN, Algebraic and textbook entry system logic. HPPrime™ comes with an integrated tool suite: HP Equation Writer supports multiple linear and nonlinear equation solving. HP Solve is timesaving application that allows you to store equations and solve for variables. Easily switch between symbolic, graphical, and numerical table views with dedicated buttons. Instructors can turn the calculator into a testing tool with TestMode configuration that makes only preapproved functions available. 
Casio Fxcg20 Graphic Calculator Picture Plot enables users to create their own graphs over pictures displayed on the color LCD. The fxCG10/20 comes with 55 types of color pictures that users can create graphs over, such as a picture of the parabola of jets from a water fountain and an image sequence of a clock’s pendulum movement. Users can perform regression calculations from the completed graphs to enhance their understanding of math functions. Expanded matrix allows addition of vector processing features. Makes learning exactly according to your textbook possible. Addition of population standard deviation, population variance and new random commands. 