Casio FX-CG500 Graphing Calculator for sale online | eBay
Casio Education Technology on Twitter: "The first graphing calculator (fx-7000G) and the latest-and-greatest from Casio (fx-CG500 PRIZM® CAS) shown side-by-side. #MTBoS #ITeachMath https://t.co/c61iiWpOBG" / Twitter