General Lesson Plans
- Teachers.Net - With more than 4,000 lesson plans in every grade level imaginable, this site is one of the best places to find free lesson plans online.
- LessonPlansPage.com - Hot Chalk's Lesson Plan Page offers more than 3,500 lesson plans, including seasonal plans, science experiments, and math worksheets.
- Teachnology - This online teacher's resource has nearly 30,000 free lesson plans in their lessons plan center.
- Education World - Known as the "educator's best friend," Education World hosts thousands of teacher-submitted lesson plans grouped by subject.
- Daily Lesson Plan - The New York Times Learning Network and Teacher Connections have teamed up to create a lesson plan site for middle school and high school teachers. A new lesson plan is added each day.
- PBS Teachers - PBS provides many great resources for teachers, including standards-based resources and lesson plans.
- Discovery Education - Discovery Education's Lesson Plan Library is a great place to find free lesson plans online. The site offers lesson plans for grades K thru 12 in a wide range of subjects.
- Scholastic - Teachers can get timely lesson plans and units from this Scholastic site.
- Thinkfinity - This site, created by the Verizon Foundation, offers many free educational resources, including free lesson plans and interactives.
- Microsoft - The free lesson plans available through the Microsoft site cover more than just computers and technology. There are lesson plans for a wide range of subjects and grade levels.
- Teachers Network - The Teacher's Network is a good place to find comprehensive lesson plans created by new and veteran teachers.
- Elementary Education - This About.com site hosts hundreds of free lesson plans and activities for elementary school teachers.
- Secondary Education - This site, also from About.com, offers hundreds of free lesson plans and lesson plan resources for teachers of grades 7 thru 12.
- Education Place - Houghton Mifflin Harcourt offers textbook support materials and lesson plans for K thru 6 teachers on their website.
- EdHelper - Teachers can get lesson plans, create puzzles, and sign up for a free newsletter on EdHelper.
- A to Z Teacher Stuff - This teacher-created site is aimed at busy teachers who want to find online resources quickly. The site links to thousands of lesson plans, worksheets, and printables.
- Lesson Planz - Lesson Planz in a searchable directory of free online lesson plans. The directory includes resources for all subjects and grade levels.
- Lesson Plans and Teaching Strategies - This California State University site offers an orderly list of free lesson plans and activities for K thru12 teachers in addition to several articles on teaching strategies.
- Teachnet.com - This site offers a modest collection of free lesson plans for art, science, math, music, health, and social studies teachers.
- Sites For Teachers - This web directory lists hundreds of quality sites for teachers, including sites that offer free lesson plans.
- KinderArt - KinderArt has the largest collection of free arts and crafts lesson plans on the web.
- PrincetonOnline - The Incredible @rt Department at Princeton Online has developed an entire section of art lesson plans for students of all ages.
- Core Knowledge - This site hosts art and music lesson plans for elementary and middle school students.
- ArtsEdge - This Kennedy Center website has nearly 500 free lesson plans for music teachers. Lessons cover grades K thru 12.
- Rock & Roll Library - The Rock & Roll Library offers eighteen comprehensive music lessons that can be used in the classroom.
Math and Science Lesson Plans
- Illuminations - This site is a great place to find free lesson plans and resources for teaching math. Illuminations offers more than 500 lessons in all.
- Columbia Education Center - CEC's no-frills website offers dozens of free mathematics lesson plans sorted by grade level.
- Math-Drills.com - This site doesn't have lesson plans, but it does offer more than 6,000 free math worksheets with answer keys.
- GirlTECH - Designed by GirlTECH teachers, these lesson plans cover math, science, and technology. Lessons are available for grades K thru 12.
- The Center for Science Education - This CSE site hosts a nice collection of teacher-developed earth and space science lessons for grades 3 thru 12.
Language Arts Lesson Plans
- Read Write Think - This International Reading Association site provides hundreds of high quality reading lessons for grades K thru 12.
- CanTeach - CanTeach offers a modest collection of lesson plans designed for students who are beginning reading and writing.
- SCORE - The California Schools Online Resources for Education (SCORE) provides thousands of literature lesson plans.
- LitPlans.com - Designed specifically for middle school and high school teachers, this site lists literature lesson plans, unit plans, study guides, teacher guides, and more.
- EDSITEment - This site hosts a wide range of foreign language lesson plans, including plans for teachers of French, German, Spanish, Italian, Latin, Greek, Japanese, and Russian.
ESL Lesson Plans
- English as a Second Language - This About.com site has English lesson plans for all learning levels as well as other ESL resources.
- Using English - Using English offers nearly 200 free PDF lesson plans and handouts for ESL and EFL teachers.
- The Internet TESL Journal - This site has hundreds of lessons for ESL teachers. Lessons cover a wide range of subjects, including grammar, reading, writing, and vocabulary.
- ESL Galaxy - With nearly 3,000 free worksheets and lessons as well as other resources, ESL Galaxy is a great online resource for ESL teachers.
- TEFL.net - TEFL.net offers free lesson plans, worksheets, and a worksheet generator. Other resources include activity ideas and teaching tips.
Guest post from Karen Schweitzer who is a writer for TeacherDegree.org, a site that specializes in teaching degree information.