http://ericir.syr.edu/Virtual/Lessons/ AskEric education Information has over 1100 lesson plans for teachers to get ideas from.
http://www.lessonplanspage.com/ Lesson Plans Page has lesson plans from PreK-12th grade. All you have to do is choose the subject or grade you want to teach.
http://www.col-ed.org/cur/ Columbia Education Center is a website put together by teachers to use in their own classrooms. On this site you choose a grade and a subject and it has lots you can choose from. I really like this website.
http://www.edhelper.com/ Edhelper has 10487 lesson plans and 8,641 additional sites available for teachers to check out.
http://teachers.net/lessons/ This site categorizes the lesson plans by levels Elementary, Middle, and High School. It also offers other categories such as games and also gives others a chance to add to the site.
http://www.csun.edu/~hcedu013/plans.html This is a social studies site called Academy Curricular Exchange; Social Studies Elementary School. It offers many social studies lesson plans that I found very interesting.
http://school.discovery.com/lessonplans/ This site offers lesson plans for teachers as well as has ways parents can be involved with their children. It also offers a place for students to look up information.
http://www.teachnet.com/lesson/ This is a site for teachers to look up lesson plans to help in his/her classroom.
http://teams.lacoe.edu/documentation/places/lessons.html This site offers lesson plans as well as offers electronic classrooms which gives some really good ideas.
http://lessonplanz.com/ This site offers teachers a way to type in the exact topic he/she wants to get information on. This way the teacher does not get a lot of lesson plans that would not be useful.
http://www.getty.edu/artsednet/resources/ This is an art site that would help teachers get ideas on different areas of art.
http://members.aol.com/Donnpages/Holidays.html I love this site; it offers different lesson plans and ideas on all Holidays.
http://learningpage.com This site
also has the name http://sitesforteachers.com. It offers nine pages
or 312 different sites for teachers to explore.