APlusPhysics

APlusPhysics is a free physics resource designed for high school students in introductory physics by several  teachers and students. It features online discussion forums, student and educator blogs, activities, the Physics In Action (student-created) podcast, as well as a complete tutorial designed around the NY Regents Physics (standard introductory algebra-based physics) curriculum with animations, videos, integrated quizzes from a question bank of more than 500 standardized test questions, and even a number of physics projects and activities.