Difficultiıes Encountered By 7th Graders in The Subject 'Percent' And Suggestions.Published in:Inonu University Journal of the Faculty of Education (INUJFE), 2018, v. 19, n. 3, p. 638, doi. 10.17679/inuefd.345749By:ERDEM, Emrullah;ÖZÇELİK, Abdullah;GÜRBÜZ, RamazanPublication type:Article