External cognition: how do graphical representations work? (Review) : http://www.elearning-reviews.org/topics/human-computer-interaction/design-principles/1996-scaife-rogers-external-cognition-graphical-representation/ ((1) computational offloading: graphics reduce the learners’ cognitive load, the “knowledge in the world” needs not to be memorized by the learner, (2) re-representation: graphics represent abstract structures in a way that is easier to comprehend, and (3) graphical constraining: graphics constrain the number of options in problem-solving tasks).

Visual Thinking Networking Promotes Problem Solving Achievement ... : http://www.umassd.edu/cas/biology/longo/problem_solving.pdf.

A cognitive deep openspace for positioning, comparing, merging and morphing our metaphors, models, maps and views1 : http://www.ceptualinstitute.com/uiu_plus/isss98/house-of-eyes.htm

Conceptual Navigation and Multiple Scale Narration in a Knowledge Manifold : http://kmr.nada.kth.se/papers/ConceptualBrowsing/cid_52.pdf

Getting From Point A to Point X : Effective Site Navigation : http://www.searchengineguide.com/claiborne/2005/0603_sc1.html

Astronomical Images: http://www.astrosociety.org/resources/linkimages.html

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