Here is a very useful website, dedicated to the understanding of “how science really works”   http://undsci.berkeley.edu/

(image credit:mjo)

Here is a useful set of websites for science teachers on edutopia.com

http://www.edutopia.org/blog/websites-for-science-teachers-eric-brunsell

You can also recommend your own websites on the blog.

Here is a useful  roundup covering Open Educational Resources

http://www.edutopia.org/open-educational-resources-guide