In this activity, learners model erosion using a clear shoebox and sand or soil. Learners observe and discuss wind and water erosion in action and determine what effect sod and rocks have on their model. They examine gullies, valleys, landslides, and waves. During the investigation, learners draw diagrams of what they see. Later in the activity, learners take a walking field trip and look for evidence of erosion. They record their observations and explanations in a science log.