@article{Gurdogan_Bayir2018_306776, author={Omur Gurdogan Bayir}, title={Problems and solutions in achieving learning outcomes of the 4th grade social studies curriculum}, year={2018}, journal={Uluslararası Eğitim Programları ve Öğretim Çalışmaları Dergisi}, issn={2146-3638}, volume={8}, number={2}, url={http://search/yayin/detay/306776} }