The personal learning network for educators
Here is a large set of STEM resources from Carleton.edu:
On the Cutting Edge is an NSF-sponsored comprehensive faculty development project for geoscience educators. It combines a program of faculty development workshops with the development of online pedagogical and educational resources.
Here are links to Cutting Edge resources that may be of particularly high interest to STEM educators in fields other than the geosciences.
I particularly like the section on Visualizations.