@article{ERBAŞ2009_90558, author={AYHAN KÜRŞAT ERBAŞ and BEHİYE UBUZ and Isil Ustun}, title={Effect of Dynamic Geometry Environment on Immediate and Retention Level Achievements of Seventh Grade Students}, year={2009}, journal={Eurasian Journal of Educational Research}, issn={1302-597X}, volume={0}, number={35}, url={http://search/yayin/detay/90558} }