Any Lesson Plan
A great resource for all types of lesson plans in any content area. From real teachers!
Did you know Google has a special search for lesson plans? As a former employer of mine used to say, "If I could, I would totally marry Google."
Science
A great place to start! Smart teachers with smart blogs, all posted right here!
Here's my question: What science teacher DOESN'T LOVE the Discovery Channel?? This link takes you to the search filter "Science - Grades 6-8" but of course you can navigate to other grade levels or subjects.
Math
All about Algebra
I love the use of manipulatives here.