Bringing the world of geochemistry into the classroom is key for college geology students, and this helpful resource from the folks at "On the Cutting Edge" at Macalester College is one way for educators to introduce students to the topic. This particular resource provides a tutorial of the analytical techniques commonly used to characterize geological materials. The goal is to help novices "gain an understanding of mineralogical, petrological and geochemical analytical techniques." The materials here include definitions and descriptions of standard topics like balancing metamorphic reactions and user-friendly tutorials for modern thermodynamic modeling programs. Additionally, the site also contains phase diagrams for teaching, such as animated versions that guide students through these chemical reactions.