David Lee EdTech

[youtube http://www.youtube.com/watch?v=PmaLd3oYFJg?wmode=transparent&autohide=1&egm=0&hd=1&iv_load_policy=3&modestbranding=1&rel=0&showinfo=0&showsearch=0&w=500&h=375]

Science and engineering project through automatons (High School)

(Source: http://www.youtube.com/)