Personal Learning Environments (PLEs) represent conceptual artefacts

Visualization Studies Map : http://www.elab.usilu.net/usi10anni/knowledge_domain_maps/visualization_scholars/

Building Hexagonal Crystals : http://www.uwgb.edu/dutchs/symmetry/hexaguc.htm (with Unit Cells)

A bijection between binary trees and some dissections of the ...
File Format: PDF/Adobe Acrobat - View as HTML Dissection of the hexagon in the plane

(Definition) en·ig·mat·ic (ěn'ĭg-māt'ĭk) Pronunciation Key adj. Of or resembling an enigma; puzzling; perplexing; mysterious; resembling an oracle in obscurity of thought;. —Synonyms puzzling, baffling, cryptic.

The Yes Men have proved, yet again, that two regular guys can put a wrench in big power machinery, with the aid of faked websites and rented suits.

" We will not be driven by fear into an age of unreason if we dig deep in our history and doctrine and remember that we are not descended from fearful men, not from men who feared to write, to speak, to associate and to defend causes which were for the moment unpopular." - Edward R. Murrows