The document discusses using course management systems (CMS) to design authentic learning activities. It defines three types of learning tasks - exploratory, dialogic, and supportive - that can be implemented through the tools in a CMS. Exploratory tasks involve discovery, hypothesis generation, and role playing. Dialogic tasks emphasize social interaction and collaboration through tools for reflection, articulation, and negotiating multiple perspectives. Supportive tasks are enacted by experts to model processes and provide scaffolding as learners gain skills. The document advocates designing learner-centered activities that engage students in meaningful learning through the various tools available in a CMS.