This document outlines a 4th grade science and social studies project on changes over time using geographic information systems (GIS). The project focuses on landforms, erosion, deposition, and how human activity and organisms can change water flow over time. Students will use maps, aerial views, and GIS software to analyze their local watershed and examine how the area has changed. They will identify land use, buffer zones, and creek systems to better understand local geography and how the region has been modified by natural and human factors over time.