One way to ensure good instructor presence in an online course and present your lecture is by incorporating short lecture videos into your online course materials.
Wikis are great for group work with your students. Wikis are web sites or web pages that multiple authors can edit without needing to know HTML code. Wikis and wiki-like applications provide a readily available, relatively easy-to-use, low-bandwidth platform for collaborative writing and editing.
Content material that resides on one website but appears on another is embedded. Embedded material might also have a reduced or specific set of interface controls when appearing on another site.