laborera
- ... , . , . , . - , , ... , ! 12 ( ).
8 . 6 , 48 - 24 , 24 . , 3 , 8- . , ( - , , ).
, :
, :
-, 8 . . - . 9 , 2a*2a 2a*4a (a - ) 4 (8) . "" . .
http://www.metacafe.com/watch/78352...azy_paper_cube/ - ,
http://www.math.nmsu.edu/~breakingaway/Lessons/MFC/MFC.html
http://www.mathematische-basteleien.de/