The document discusses incorporating problem-based learning (PBL) into online instruction. It defines PBL as a teaching method based on constructivist learning theory where the problem drives the context for learning. It describes designing authentic problems that are not easily solved and can morph with additional discoveries. It also discusses the instructor acting as a facilitator, guiding and providing resources as students collaborate to solve problems. A variety of online tools like blogs, discussions, and wikis are recommended for facilitating collaboration in PBL online.