For the last five years, KBS K-12 Partnership teachers have been participating in a unique program that involves teachers, scientists, and educators at four LTER sites around the country. The goal is to promote environmental science literacy through the frame of learning progressions. In other words, the project has conducted research about how students make sense of important environmental issues and used that research to help teachers work more effectively with their students about these issues. This program – the LTER Math Science Partnership (MSP) – is a collaboration between four LTER