https://powerpoint.office.live.com/p/PowerPointView.aspx?FBsrc=https%3A%2F%2Fwww.facebook.com%2Fattachments%2Ffile_preview.php%3Fid%3D172538459754564%26time%3D1444619133%26metadata&access_token=100002549747826%3AAVISZqTHVqId0Z1aRH-UrtpGOFhthV7VNwtmtU4iCWjH0g&title=Vanessa.pptx

http://www.maestroteca.com/

http://www.educacontic.es/

https://www.youtube.com/watch?v=F8vVrue61rc