50 Must Read Up and Coming Blogs by Teachers
http://www.teachingtips.com/blog/2008/06/30/50-must-read-up-and-coming-blogs-by-teachers/
I found it hard to find blogs that are current and updated! Also, there were many more middle and high school teacher blogs than elementary school - especially for math and science.
http://www.tandalay.com/peforchildren/
I like PE For Children. It has many different opinions and ideas coming together in one space. There are links to articles as well as lesson and activity ideas. It is an open community, so I can create an account and post my thoughts and ideas as well.
http://teacherscount.wordpress.com/
This blog is interesting to see a different side of teaching. From what I read it is the more personal side of teaching - including the students' personal lives and the teacher's. It also includes tips of how to deal with the different situations.
http://mathnexus.wwu.edu/
Though not a blog, this is a fun math website that is updated consistently. It has fun facts, problems of the week and activities to do with students of all ages.