Here are some interesting sites that I have found helpful. Maybe others can use them as well!
Teaching Ideas:
http://www.successlink.org/GTI/
Rubistar for scoring guides
http://rubistar.4teachers.org/index.php
Lesson plans and resources through Smart Exchange
http://exchange.smarttech.com/#tab=0
Wiggio for group activities
https://wiggio.com/?#tpl=home_0
"Twister" ClassTools to create a fake "Twitter" post
http://www.classtools.net/twister/
Lesson Sharing
http://www.sharemylesson.com/
Webquest for History
http://www.aacps.org/aacps/boe/instr/curr/comed/HSwebquest/house/index.html#Task
Missouri NEE
http://nee.missouri.edu/
The Ultimate Teacher Resource Guide
http://www.supersummary.com/teacher-resource-guide/
Teaching Ideas:
http://www.successlink.org/GTI/
Rubistar for scoring guides
http://rubistar.4teachers.org/index.php
Lesson plans and resources through Smart Exchange
http://exchange.smarttech.com/#tab=0
Wiggio for group activities
https://wiggio.com/?#tpl=home_0
"Twister" ClassTools to create a fake "Twitter" post
http://www.classtools.net/twister/
Lesson Sharing
http://www.sharemylesson.com/
Webquest for History
http://www.aacps.org/aacps/boe/instr/curr/comed/HSwebquest/house/index.html#Task
Missouri NEE
http://nee.missouri.edu/
The Ultimate Teacher Resource Guide
http://www.supersummary.com/teacher-resource-guide/