Motion pictures are a series of still images that create the illusion of movement when viewed rapidly in succession due to the way the human eye processes visual information. Films are commonly shown in movie theaters using 35mm film, while schools typically use 16mm film. The key elements that go into a successful motion picture include the direction, story/script, acting, production design, music, and editing. Some advantages of using motion pictures in education are their ability to motivate students, adaptability for groups of different sizes, and relatively low cost compared to repeated viewings. However, choosing films with exactly the desired content and potential equipment issues can present disadvantages. Teachers should preview films thoroughly and guide student viewing with questions to maximize educational impact.