Texas Instruments Nspire CX CAS Graphing Calculator， Frustration Free Package<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Backlit Color Display</li><li>Deeper understanding of abstract concepts in math and science</li><li>Enter notes， steps， instructions and other comments on the screen alongside the math</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41frlRnIRmL.jpg" noproxy>