This document discusses how QR codes can be used in language lessons to provide interactive content and links to digital resources. It provides examples of how QR codes were used to link to listening exercises, weather reports, vocabulary posters, and student projects. Teachers can generate QR codes from URLs using online converters and students can scan the codes using reader apps on their phones to access linked content. The document suggests QR codes can bring worksheets to life, provide exit tickets with further resources, and allow students to access self-assessments and teacher feedback.