Mission HydroSci (MHS) teaches earth science concepts at a level that is appropriate for middle school students. Earth Science is an integrated science, bringing together chemistry, biology, and physics as they apply to the workings of the Earth. The applied and often visual nature of Earth Science helps students make connections to their lives and communities. The curriculum of MHS focuses on the water systems component of Earth Science. MHS consists of various curriculum units each designed to teach a major topic within water systems. These major topics include: surface water, water pollution, groundwater, and atmospheric water. As students play through MHS, they will complete tasks that require knowledge of water systems. These tasks range from finding the source of pollution within a watershed, to navigating through an underground puzzle using their knowledge of evaporation and condensation.