Walmart has the Texas Instruments TI-84 Plus Graphing Calculator for only $75.67 Shipped! (Reg. $116) An essential educational tool, it is conveniently preloaded with software, including Cabri Jr. interactive geometry software to give users the edge they need to succeed in the classroom. It features up to 10 graphing functions that can be defined, saved, graphed and analyzed at one time. The advanced functions are easily accessed through pull-down display menus for convenience and ease of use. This programmable graphing calculator has horizontal and vertical split-screen options for different orientations, so it offers multiple perspectives for a better understanding of the material.