Want a fun, engaging way to integrate technology into your classroom? If you have access to at least one iPod Touch, iPhone, or iPad with camera capabilities, all you have to do is download a free QR Code Reader app and you instantly have a self-checking center activity that will be tons of fun for your students! This product contains the following: Set 1: Addition Without Regrouping (8 task cards)Set 2: Subtraction Without Regrouping (8 task cards)Set 3: Addition WITH Regrouping (8 task cards)S