1. The document discusses using QR codes in education, providing examples of how QR codes can be used to link physical materials to online content and resources for students. 2. Reasons QR codes are useful in education include eliminating typing long URLs, providing additional support and content directly to students with little effort, differentiating instruction for different proficiency levels or learning styles, and connecting physical student work and portfolios to online versions. 3. The document provides examples of the types of online content and resources QR codes can link to, and demonstrates how to generate and insert QR codes.