On Google or other Web search engines, a search on "lesson plans" yields thousands of hits. Many sites include other resources such as education standards, chat rooms for teachers, research reports, etc. Note that some sites require a paid subscription to see the full version of lesson plans. Try to narrow your search, for example:
Or use one of the links below to popular and interesting free lesson plan web sites. Mouse over the "info" icon for a brief description of the site.