Library of Congress offers a variety of learning materials including primary source sets, lesson plans and presentations& activities.
Model Curriculum shares sample unit and lesson plans a series of unit and lesson plans that incorporate learning progressions and content resources aligned to the Pennsylvania standards within the Curriculum Frameworks.
National Endowment for the Humanities is a collection of projects and lesson plans for Art& Culture, History & SS, Literature & Language Arts and World Language.
NEA hosts a collection of lesson plan for k-12 in arts,social studies, math, language arts and Literature, science and health and phys ed. Sciences, Math and current events.
Practical Money Skills offers lesson plans for students of all ages — from preschoolers and elementary school students to teens and college students.
Science Buddies is a collection of free project ideas and help in all areas of science from physics to food science and music to microbiology.
Teacher.org lesson plans is brought to you by teachers who are committed to encouraging conceptual understanding and lifelong learning. These teachers have real life classroom experience and have gone above and beyond to create these lessons.
USA.gov provides lesson plans, activities and worksheets for your classroom.