The personal learning network for educators
A great resource of materials around STEM are available through a blog by Diana Laboy-Rush, an engineer, and the STEM Solutions manager at Learning.com (where I also work).
She has an informative blog, Educate to Innovate on this site:
and she posts these resources under the STEM Guides site
Integrate STEM through project-based learning
Integrating E-book publishing through math and science instruction
STEM in the early years - why it's critical to start early
Project-based learning to increase student interest in STEM
Where are the women in STEM?