Provide multiple representations of concepts from multiple perspectives. To promote cognitive flexibility and transfer of knowledge and skills beyond the initial learning situation, learners must explore and revisit the same material at different times, for different purposes, in different contexts, from different conceptual and case perspectives. Avoid oversimplification of complex content. Emphasize knowledge construction rather than transmission of material . Use hyperlinks to cross reference information. Allow learners to revisit the same material at different times, for different purposes, in different contexts.