study bays me – Increasing the ratio of results from PISA tests (Program for International Student Assessment) in the area of ​​mathematics and science by 100 points translates into an annual GDP growth of approx.

This meeting was to include those with whom you come back with a huge baggage of ideas and optimism. February 28, 2015 – Saturday – The National Library in Warsaw 09.30 – Registration – entrance to the National Library (213 Independence...
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