Utile

http://www.educatorstechnology.com/2015/01/excellent-science-apps-to-use-on.html

https://www.google.ro/url?sa=t&rct=j&q&esrc=s&source=web&cd=1&cad=rja&uact=8&ved=0CB8QFjAA&url=http%3A%2F%2Fwww.hotnews.ro%2Fstiri-esential-16898118-teste-suplimentare-pregatire-matematica-pentru-elevii-care-vor-sustine-evaluarea-nationala-2014-publicate-ministerul-educatiei.htm&ei=ruueVPjvMpPgaufAgOAB&usg=AFQjCNFl_csvY44-8fPEVqVgUJKlBPfedw&sig2=ogXBjXZHvMiqOOBXjccI1w

http://blogs.kqed.org/mindshift/2013/09/looking-for-real-world-math-problems-try-google-earth/

How to embed a sound file in a twinspace page from Petros Michailidis