This document provides an overview of QR codes including what they are, how to create them, and how to scan them. It also discusses several ways QR codes can be used in education, such as linking to educational videos or websites, creating scavenger hunts, and adding additional information to textbooks, worksheets, or posters. The document shares many free online QR code creator tools and scanner apps that can be used by teachers and students. Overall, the document aims to educate about QR codes and inspire different ways they could be incorporated into classroom learning.