This document discusses using GIS (geographic information systems) in geography classrooms. It provides an overview of how GIS can be used at different key stages, from basic digital mapping in KS1-2 to more advanced analysis using GIS software in KS4 and beyond. Examples of potential GIS activities are given, along with free and paid GIS software and data options for schools. The document emphasizes that GIS should be used to explore and answer geographic questions, not just teach the software itself.