LINKS
The links below are to various sites that either explicitly provide professional development tools and resources, or that have tools and/or resources that I believe may be useful in professional development.
Success at the Core http://successatthecore.com/
PBS Teacherline - online courses http://www.pbs.org/teacherline/
Edtechteacher - professional development courses for individuals and schools. http://edtechteacher.org/index.php/professional-development
Coursera, a big provider of Massive Open Online Courses (MOOCS) includes courses on education and professional development. https://www.coursera.org/courses?orderby=upcoming&lngs=en&cats=education,teacherpd
Edvation, offering both technology and other professional development http://www.edvation.com/
Free online professional development courses from Intel http://www.intel.com/content/www/us/en/education/k12/teach-elements.html
Nonprofit organization all about professional development. http://learningforward.org/
Principals blogging. Interesting. http://connectedprincipals.com/
Great list of links to various online communities for teacher professional development. http://classroom-aid.com/teacher-development/
Interesting website about the process of improving school focusing on the effective schools correlates. http://www.mes.org/
Some great resources from MSU for both professional development and content. http://fod.msu.edu/oir/online-instructional-resources
Professional development membership community. Some resources are free; some require membership. http://www.simplek12.com/
Fee-based site aimed at professional development through online course, webinars, etc. http://plpnetwork.com/
Professional Development from PBS. Fee-based. http://www.pbs.org/teacherline/
Online database of professional development conferences and workshops for educators and teachers from Early Learning to Grade 12. http://www.educatorsprofessionaldevelopment.com/
Teacher resources grouped by subject and grade level. http://www.learner.org/index.html
Lots of good content about teaching. http://www.edutopia.org/
How to videos for the technology classroom. http://learnitin5.com/
Free online tutorials on all manner of websites, software, etc. http://www.gcflearnfree.org/topics
Online tutorials on a wide range of websites and software. Fee-based. http://www.lynda.com/
Online tutorials on a wide range of websites and software. Fee-based. http://www.atomiclearning.com/
Website of the National Staff Development Council (now called Learning Forward). They have an annual conference on professional development. http://www.learningforward.org/
The Library of Congress has professional development models for learning about using primary sources. http://www.loc.gov/teachers/professionaldevelopment/
Education Week's online professional development sourcebook. http://www.edweek.org/tsb/