About the author
This add-on has been carried out within the program of innovative certificates of Google for Education, by Jaume Feliu (@jfeliua) and mentored by Nay Belaunzarán (@NayBelaunzaran) to whom I can only thank for their indications and constant support.
I use technology to change the methodologies
My user in twitter @jfeliua
My blog http://www.tecnocentres.org