The Educator's Reference Desk- A database of more that 2000 lessons plans and resource guides.

Discovery School Lesson Plan Library- A collection of k-12 lessons for all subject areas. Lessons include related Discovery channel videos.

Scholastic Lesson Plans- K-12 lesson plans that include teacher resources, Internet resources and reproducible worksheets.

teAchnology Lesson Plans- A collection of links to K-12 lessons plans. Lesson plans include national standards, web resources, and reproducibles.

Read Write Think- Teacher created literacy lessons. Lessons are organized by grade band, literacy strand and literacy engagement. Plans include web resources and NCTE/IRA standards.

ArtsEdge Lessons- A collection of lesson plans with an art connection.

National Geographic Expeditions Lessons- Geography lesson tied to the U.S. National Geography Standards.

EdSiteMent Lessons- Sponsored by the National Endowment for the Humanities. Includes lesson plans for Language Arts, Social Studies, Art and Culture and Foreign Languages.

Illuminations- NCTM collection of math lessons covering topics like algebra, data analysis, measurement as well as numbers and operations. Lessons are organized by grade level and standard.

Science NetLinks- Science lessons organized by grade level and Science Literacy Benchmarks.

Teacher Vision Lessons- Pre-K -12 lesson plans in a variety of subject areas. Also includes printables and assessment such as rubrics, quizzes and strategies. A Special Needs Resources section provides modification ideas, IEP resources and more.