Katarzyna Winkowska-Nowak
@kasiamath
@GeoGebra , @mathematics, @STEM @STEAM @Ashoka @flggb #flggb #geogebra #mathematics
ID: 365504209
http://ashoka-cee.org/poland/fellow/katarzyna-winkowska-nowak-2/ 31-08-2011 15:10:14
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