Really cool and super sites on the web...
I will try to give you a short explanation of sites that I have added to the Live Binder..."Technology in the Classroom" -  http://www.livebinders.com/edit/index/228695

http://www.socrative.com/ - Socrative - This site allows the teacher to create a "room" that students can join to take a quiz, brainstorm, review, etc!  It can be accessed from any device that has browsing capabilities!  There is also an app for the teacher and the students. (Under Collaborate)
http://www.twurdy.com/ - Twurdy - This is a search engine that will provide 10 indexed levels of reading.  It is great for science!  This is a great resource that matches the material with the student's reading ability! (Under Research)
http://www.magzinr.com/ - Mazinr - This site allows you to bookmark sites and Tweet them at the same time!  If you have a school or class Twitter account, this would be a great way to share resources with parents and students! 
http://www.thinglink.com/action/store/thinglink-tabs - Thing Link Tabs...for Facebook - This site allows you to create interactive images and info graphics...another way to add to your school or team Facebook account. (Under Share)
http://www.studyblue.com/ - Study Blue - Create notecards and flashcards! Join for free!  Use other peoples' flashcards or create your own.  There is also an app...and a Facebook application! (Under Study)
http://classconnect.com/ - Class Connect - Build, store, and share lesson plans!  Your own personal lesson plan database!  Lessons are aligned to common core! (Under Lesson Planning)
http://www.woodlands-junior.kent.sch.uk/ - Woodlands Junior High - They have an amazing site with tons of links for all subjects! (Under Interactive)
http://www.sharendipity.com/ - Sharendipity - This is an online game making site!  What a wonderful way to reinforce material...have students to build games around the material that you are studying! (Under Create)
http://www.wikimindmap.org/ - Wiki Mind Map - This is a search tool for wiki content! (Under Research)
http://wikisummarizer.com/Pages/Default.aspx - Wiki Summarizer - This site summarizes Wikipedia articles.  This tool could be used for your struggling readers or when you are looking for the main topics or points from an article! (Under Research)