I teach biogeochemistry at the undergraduate and graduate levels. In both cases I seek to integrate observation and a system-level understanding of coupled processes with quantitative models (both analytical and numerical) to allow the students to deepen their understanding of biogeochemical processes. By integrating quantitative methods with observations in the field, laboratory, and from the literature, students develop both a better understanding of biogeochemical phenomena as well as a more intuitive understanding of the use of mathematics and simulations to solve diverse problems. I continue to teach in the undergraduate field EES program each spring, a very valuable living-learning experience for students and faculty.