mattruffoni

Sito personale ad uso scolastico e di ricerca

3b per 15/2/17

Sciences

https://www.youtube.com/watch?v=cWt1RFnWNzkhttps://www.youtube.com/watch?v=a5yzRRvROpEhttps://www.youtube.com/watch?v=Mehz7tCxjSE

 

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