The mathematical prerequisites are concurrent enrollment in Beginning Algebra. The course is divided into several lessons , most of which begin with a lecture presented as digitized audio accompanied by formatted text. View detailed lesson contents . A sample lecture screen from Introductory Physics. Audio is accompanied by graphical displays and sometimes video.
Many lessons contain interactive lectures to help demonstrate the material.
Exercises and Quizzes After most lectures, students are asked to try some sample questions about the new material. Once they have some practice, they receive graded online quizzes . Each week, students report their exercise and quiz scores to their instructor, who keeps detailed student records and identifies special problem areas. Throughout the course there are homework assignments , which are not graded but are discussed in the virtual classroom. After each major section of the course there is an exam which is graded by the tutor.