Volume 7, Issue 2

Cover Pages
INVITED ARTICLE: Building Journal Impact Factor Quartile into the Assessment of Academic Performance: A Case Study https://doi.org/10.17275/per.20.26.7.2 Keziban Orbay, Ruben Miranda, Metin Orbay	i-xiii
Achievement Goals and Learning Approaches in the Context of Social Studies Teaching: Comparative Analysis of 3×2 and 2×2 Models https://doi.org/10.17275/per.20.16.7.2 Servet Üztemur	1-18
An activity for gifted and talented students to learn the concept of keystone species https://doi.org/10.17275/per.20.17.7.2 Gökşen Üçüncü, Ferhat Karakaya, Mehmet Yılmaz	19-32
Effectiveness of The Big Math for Little Kids Program on the Early Mathematics Skills of Preschool Children with a Bilingual Group https://doi.org/10.17275/per.20.18.7.2 Özlem Altındağ Kumaş	33-46
The Effect of the Item’s Type and Cognitive Level on Its Difficulty Index: The Sample of TIMSS 2015 https://doi.org/10.17275/per.20.19.7.2 Mustafa İlhan, Nagihan Boztunç Öztürk, Melek Gülşah Şahin	47-59
An Overview of the Phenomenon of Waiting in the Class from the Perspective of the Classroom Teacher: A Phenomenology Study https://doi.org/10.17275/per.20.20.7.2 İbrahim Akar	60-79
The Institutionalization of Ethics in Schools: A Qualitative Research on Teachers https://doi.org/10.17275/per.20.21.7.2 Mehmet Hilmi KOÇ, Tuncer FİDAN	80-101
Investigating computational thinking skills based on different variables and determining the predictor variables https://doi.org/10.17275/per.20.22.7.2 Didem ALSANCAK SIRAKAYA	102-114
Opinions of Prospective Biology Teachers about “Outdoor Learning Environments”: The Case of Museum Visit and Scientific Field Trip https://doi.org/10.17275/per.20.23.7.2 Nurcan UZEL	115-134
Assessing Psychosocial Outdoor Learning Environment of Pre-service Science Teachers through The Field Trip Experiences https://doi.org/10.17275/per.20.24.7.2 Rukhaini Fitri Rahmawati, Muhamad Imaduddin, Arghob Khofya Haqiqi, Achmad Ali Fikri, Ulya Fawaida, Dody Rahayu Prasetyo, Chatree Faikhamta	135-150
Comparison of decision making skills and self-efficacy perception levels in adolescents in terms of gender and grade variables https://doi.org/10.17275/per.20.25.7.2 Aslı Sarışan-Tungaç, Süleyman Yaman, Belgin Bal-İncebacak	151-163
Diagnosing Students’ Misconceptions of Astronomy Through Concept Cartoons https://doi.org/10.17275/per.20.27.7.2 Seçil Serttaş, Ayşe Yenilmez Türkoğlu	164-182
Exploring Student’s Representation Process in Solving Ill-Structured Problems Geometry https://doi.org/10.17275/per.20.28.7.2 Lydia Lia Prayitno, Purwanto Purwanto, Subanji Subanji, Susiswo Susiswo, Abdur Rahman As’ari	183-202
Relationships between value orientations of adolescents and motivational action conflicts https://doi.org/10.17275/per.20.29.7.2 Hüseyin Çalışkan, Çağla Karademir, Turgay Öntaş	203-215
Bibliometric Analysis of Educational Research Articles Published in the Field of Social Study Education Based on Web of Science Database https://doi.org/10.17275/per.20.30.7.2 Ömer Faruk Sönmez	216-229
The mediating role of parenting efficacy in the association between preschool father-child relationship and parental stress https://doi.org/10.17275/per.20.31.7.2 Neslihan Durmuşoğlu Saltalı	230-240