Teacher Vision: lesson plans, graphic organizers, section on adaptations and modifications
Teachers.net: Lesson plans and ideas from teachers; search by grade level or subject area, chatboards for teachers
EDinformatics: directories; activities, resources, technology, lesson plans, databases, software, applications; much information
CyberSleuth Kids: links, list of subject areas
Lesson Plan Central: Classroom Clipart, worksheets and reproducibles, Power Point templates, video clips, Cool Tools, an encyclopedia, categories to look at, and a place to submit lesson plans, info, lesson plans, webquests, clip art
Teachers First: Classroom Planning Calendar, activities, reading, downloads, Power Points, research, smart board lessons, information, blogs, games, a weekly poll, lessons, units and web resources, and lists featured sites and a section called Classroom Ready to Go.
The Gateway: lesson plans, search by topic, subject, grade level; information, theme focus for each week, links
Discovery Education: quizzes, lesson plans, useful for parents and students, also

Do you know of other online resources for lesson planning? Leave a comment below.

Online Resources for Lesson Planning