The study examines how implementation of a real-world data and media-centered human impact curriculum influenced teacher dispositions toward using data and media in their ecology and human impact lesson plans. It explores how integration of these elements shapes teachers’ lesson plans. The findings show that this curriculum implementation positively affected teachers’ dispositions to use data analysis and media about scientific research to explain how people impact ecological function. Furthermore prior to the curriculum implementation, many teacher lesson plans focused on the general theme that people harm the environment. The curriculum gave teachers cases of data and media examples that helped them specify the particular ways people cause ecological harm.