PRACT 1:
1 http://dl.dropbox.com/u/49751115/Skectchup/fig11.skp
2 http://dl.dropbox.com/u/49751115/Skectchup/fig21.skp
3 http://dl.dropbox.com/u/49751115/Skectchup/fig31.skp
PRACT2:
1 http://dl.dropbox.com/u/49751115/Skectchup/fig1.skp
2 http://dl.dropbox.com/u/49751115/Skectchup/fig2.skp
3 http://dl.dropbox.com/u/49751115/Skectchup/fig3.skp
4 http://dl.dropbox.com/u/49751115/Skectchup/fig4.skp
5 http://dl.dropbox.com/u/49751115/Skectchup/fig5.skp
PRAC CASA http://dl.dropbox.com/u/49751115/Skectchup/casa.skp
PRAC LIBRE http://dl.dropbox.com/u/49751115/Skectchup/pista%20(1).skp
"Only those who will risk going too far can possibly find out how far they can go."
