Summary: There exist five kinds of understanding (or cognitive tools) that individuals usually master in a particular order during the course of their development; these have important educational implications.
Originator: Kieran Egan, a Professor at Simon Fraser University, proposed his theory of cognitive tools as part of a sustained program of writing and research on the role of imagination in learning, teaching, and curriculum.
Keywords: Cognitive, Stages, Imagination, Ironic, Literacy, Memes