Examining Pre-Service Teachers' Pedagogical Content Knowledge on Fractions in Terms of Students’ Errors (Pages: 719-735) (Examining Pre-Service Teachers' Pedagogical Content Knowledge on Fractions in Terms of Students’ Errors (Pages: 719-735)) - Dergi Platformu - Ömer ŞAHİN, Yasin SOYLU, Cevat SOYLU | International Online Journal of Educational Sciences