8-10-2013 Γλώσσα και μαθηματικά

https://docs.google.com/document/d/1M_roR7A1D5KRWwcGGdq5wE9ipLEBhjztqTwAw6wqPwo/edit?usp=sharing

https://docs.google.com/file/d/0B9MOJixuITbLYTVvdFM2OGNFbnc/edit?usp=sharing

https://docs.google.com/document/d/1O6aAnW6J9TF0Al3X-Wn-C_SxeEIPIB8oDnL2euKkos4/edit?usp=sharing

https://docs.google.com/file/d/0B9MOJixuITbLUE1CSlRJQ2hISk0/edit?usp=sharing