This activity has been designed to help students understand a variety of concepts related to water use, efficiency, and students' own impacts on their watershed. It is intended for use both in the classroom and at home. The first concept covered in this exercise is, "What is a watershed?" Ideally this concept will be conveyed in the context of the watersheds in which the students live to enhance understanding of the concept and connection to the places where students live. It is extremely important to convey the idea that watersheds come in all different shapes and sizes and that smaller watersheds are nested inside larger ones, much like Russian dolls. This paper provides activities that can help your students bridge the gap between a large concept, and their home watershed. The goal is to help students understand the connections between the source of the water they use; the ways their water use habits affect the environment and human health and ways to reduce their impacts by pledging to take steps to use water more efficiently.