In this article you will see a lesson that uses the technology of GeoGebra. GeoGebra is a free software that can do many things. The program allows you to do basic graphing and can find intersections points as well as make shapes. The lesson uses GeoGebra to graph functions that students came up with to model a given situation. The students can use the program to find intersection points in two equations or find end behavior. The lesson uses the GeoGebra as a tool to aid in students learning.