There are quite a range of possibilities! One classic example might be a river investigation. Students visit various points along a river and collect data about the river, including width and depth, but also looking at the surrounding environment, the landscape, and the human activity in the area. Depending on their age and academic level they might focus on particular areas, or practise measuring techniques, or just be aiming to learn some geography in a fun way..! This might take a large part of the day and involve walking or travelling by minibus or coach to different parts of the river.