I recommend this group - Charlotte-Mecklenburg had them come in and do a summer workshop with math and science to elementary/middle school teachers.
TEN80Education (on facebook)
Engineer-Educators collaborating to help our youth cultivate a true love of learning, sense of teamwork and achievement in STEM fields.
Ten80 Education is a team of engineers, scientists, teachers, professors and parents all dedicated to a single mission. We have joined forces to help students and teachers understand STEM subjects, STEM careers and how they affect the world around us.
Ten80 partners include school districts and Universities around the country, Texas Instruments (DLP Products & the "Calculator Group"), SolidWorks, Science Kit, Sargent-Welch, and the North Carolina Motorsports Association; all entities that share the same, progressive vision for education.