Find out how GPS works and how it can pinpoint your location to within a few metres. People and places -Mapping - GPS Learning Points GPS stands for Global Positioning System. The method of using three GPS satellites to pinpoint a location is known as triangulation. GPS devices display your location on a digital map and update it. A Twig Curriculum Film. Delivering key learning points. Get straight to the facts in just three minutes – directly linked to core learning, Twig's curriculum films will fit neatly into your lesson plans.