?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=Puri&rft.aulast=Pramudiani&rft.au=Pramudiani%2C+Puri&rft.date=2022&rft.issue=4&rft.atitle=How+does+a+missing+part+become+important+for+primary+school+students+in+understanding+fractions%3F&rft.pages=565-586&rft.title=Journal+on+Mathematics+Education&rft.volume=13&rft.genre=article