The PowWow and Symposium software programs allow an instructor to guide students through a site with the students viewing exactly what the instructor chooses to show them. Tables of contents list site content by topical index, but typically do not show how items link to one another like site maps. Note, many people erroneously refer to simple tables of contents as site maps, but they are not the same as visual site representations showing linkages. Not aware of any examples currently in existence. Links should allow users to exit or return to the home screen from any page in the presentation.
Search engines allow users to quickly locate specific information.
The Exploratorium web site at right embeds a search engine for users to locate information specific to their site. Note the use of text cues at the top of Yahoo and About. When complex concepts are encountered or when students possess naive mental models and limited prerequisite understanding, conceptual scaffolding can prompt learners to consider important facets of an idea. IAWM provides site objectives. Utilize a wide variety of links on your site to expose learners to elaborative information, related information, or contrasting perspectives.