1) Copyright law governs the use of original creative works and defines the rights of copyright owners. It applies to both analog and digital works.
2) The owner of a copyrighted work has the exclusive right to reproduce, distribute, display, or perform the work publicly. For works found online, copyright protection still applies unless the work is explicitly labeled as public domain.
3) Educators can rely on fair use exemptions or obtain permission or a license to use copyrighted works for educational purposes. The TEACH Act provides additional exemptions for distance education. Determining fair use requires analyzing the purpose of the use and amount of the work used.