This document discusses principles for instructional design in distance learning environments. It discusses the importance of diversified instruction, communication and feedback, and collaboration. For diversified instruction, it is important to assess students' prior knowledge and provide a variety of ways for students to engage with course content, such as through case studies, journals, and online projects. Communication can occur through email, discussion forums, and video/audio conferencing to provide feedback. Collaboration allows students to interact, share knowledge, and build a sense of community through activities like wikis, blogs and cloud-based storage. Software like Moodle and Manhattan can be used to host course content and materials to support learner interaction.