TI-Nspire CAS with Touchpad Description The advanced science and math calculator has finally taken a giant leap forward. Be inspired by the TI-Nspire CAS with Touchpad. It's a graphic, graphing calculator that lets you enter formula expressions as you want to see them. This calculator is the vehicle that leads to academic success. Developed hand-in-hand with educators worldwide and built on proven educational graphing technology and methods, the Texas Instruments Ti-nspire CAS Graphing Calculator represents the latest development in advanced educational tools. Some this calculator's unique features let you see multiple representations of a problem individually or together on a single screen and the ability to dynamically link representations of a problem to see how changes to one affect other problems. This calculator also lets you grab and move graphed functions in real time to observe relationships and patterns, and the calculator saves work in documents, similar to a computer. Ideal for classroom use, the calculator's press-to-test feature blocks access to certain geometry features not allowed on exams. You can use this TI graphing calculator on the PSAT and SAT college entrance exams and on AP tests. Features: With CAS - Computer Algebra System - you can - Perform both symbolic and numeric calculations. Factor and expand expressions and solve for common denominators. Features: Touch it - Easy-glide Touchpad operates like a computer with a mouse. Graph it - The new Scratchpad on the enhanced Home screen allows you to quickly perform calculations and graphs without saving your work. See it - Split screen allows you to see a math problem in different ways - a graph, equation, table, geometric figure or text. The student software enables your home computer to function just like the handheld graphing calculator. So you can use the larger screen to easily create, edit and transfer TI-Nspire documents between computer and handheld. Recharge it - Even though four AAA alkaline batteries are included, you can also choose to purchase the TI-Nspire Rechargeable Battery (sold separately) for extended battery life. It easily charges with the wall adapter that is included in its package, or you can use a USB cable to charge through the computer. Product Details: Brand: Texas Instruments Color: Black Calculator Type: Graphing Power Source: Battery Powered Number of Batteries: 1 Lithium Ion batteries required. (included) Product Dimensions: 8.35 x 0.55 x 2.36 inches Item Weight: 1.63 pounds Item model number: N2CAS/CLM/2L1 Batteries: 1 Lithium Ion batteries required. (included) Is Discontinued By Manufacturer: No Date First Available: October 22, 2009 Manufacturer: Texas Instruments