?url_ver=Z39.88-2004&rft_id=doi%3A10.23918%2Fijsses.v5i3p232&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aulast=Serin&rft.aufirst=Hamdi+Serin&rft.au=Serin%2C+Hamdi+Serin&rft.title=International+Journal+of+Social+Sciences+%26+Educational+Studies&rft.date=March+2019&rft.atitle=Project+Based+Learning+in+Mathematics+Context&rft.volume=5&rft.issn=24091294&rft.issue=3&rft.pages=232-236&rft.genre=article