Students take on the role of engineers who need to design a roller coaster. They will explore the history of roller coasters, the different types, and the many things that can affect the success or failure of a roller coaster. Finally, the students will use a variety of Internet resources to guide them as they create their own roller coaster and test it for success. This lesson plan was created as a result of the Girls Engaged in Math and Science University, GEMS-U Project.