Our interactive Physics and Chemistry Tutorials are our own free textbooks, written at a high school reading level (and by teachers, not AI), with helpful images, understanding checks, and …

Jun 20, 2025 · Learn what physics is, why it's essential in everyday life, and how to begin with online physics courses.

The physics archive contains legacy physics content, and is not being updated with new content. For our most up-to-date, mastery-enabled courses, check out Middle School Physics, High …

Jun 10, 2025 · Learn physics online from top instructors at MIT, Yale, and Rice University, and others!

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This course provides a thorough introduction to the principles and methods of physics for students who have good preparation in physics and mathematics. Emphasis is placed on problem …

The Physics Classroom Tutorial presents physics concepts and principles in an easy-to-understand language. Conceptual ideas develop logically and sequentially, ultimately leading …