Sint-Donatusinstituut Merchtem - Belgium (Flanders)
Cesare Vivante - Bari - Italy
Intercultural Gymnasium of Thessaloniki  - Greece 

Crop circles challenge!


Crop Circle photo courtesy The Crop Circle Connector (www.cropcircleconnector.com)

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Dimitris Kastaniotis, December 2005, Created con GeoGebra

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