- The document discusses six-figure grid references, which provide a more precise location than four-figure grid references by including two additional digits. - It explains how to take a six-figure grid reference using eastings and northings, and provides examples for students to practice identifying locations on an Ordnance Survey map using this method. - The lesson aims to give students an understanding of when to use six-figure grid references and how they work. Students are assigned a homework task and extension activity involving map skills.