Various Subjects
• Ask ERIC - contains 1100 lesson plans which have been submitted  from teachers
• Sites for Teachers - the net's best resource for teachers
• Lesson PlanZ - an easy for teachers to find online lesson plans and teaching resources
• Lesson Plans and Teaching Strategies
• A to Z Teacher Stuff - offers lesson plans for every grade
• Northwestern Regional Educational Laboratory
• Busy Teachers Website
• Apple Learning Learning Interchange
• MiddleSchool.net: For Teachers by Teachers
  

Science

• Smile Program Chemistry Index - Chemistry lesson plans
• Middle School Science Lesson Plans


Language Arts

• Middle School Language Arts Lesson Plans


Math

• Middle School Math Forum - Math lesson plans
• Teacher2Teacher


Social Studies

• Harold House Social Studies Lesson Plans and Resources
• Government , Social Studies , History