The aim of this study was investigated of the effects of Grup Investigation (GI) method of applying Modeling Based Teaching (MBT) method in the "The Particle Structure and Properties of Matter" unit on constructivist learning. It was used pretest-posttest quasi-experimental design. This research was selected two groups of seventh graders in a middle school. The first group (EG1) was applied the GI method and the second group (EG2) was applied the GI and the MBT methods together. The data were collected using the Constructivist Learning Environment Scale (CLES) and focus group interviews. The results of the CLES indicated the MBT method was contributed in the factors of "Discussions and Interviews", "Conceptual Discrepancies", "Sharing Views with Others", "Reflection and Motivation for Discovering Concepts" and "Meeting the Needs of Learners" on the GI method. In the focus group interviews, the students applied modeling Based Teaching (MBT) and Grup Investigation (GI) methods together articulated to improving mental perspectives, having confused thoughts, learning to question the things learned so far and learning to use the knowledge learned so far. The students stated that they experienced having confused thoughts during the application process, then this situation disappeared and therefore they learned better. To the results of this research, it can be said that applying MBT method and GI method together contributes to formation of higher quality learning environments.

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ÖzetBu çalışmanın amacı; ilköğretim bölümü birinci sınıf öğrencilerinin bilimsel süreç becerilerini etkileyen faktörlerin incelenmesidir. Araştırma yöntemi olarak tarama yöntemi kullanılmıştır. Çalışmanın örneklemi ilköğretim bölümü birinci sınıfında öğrenim gören 224 öğrenciden oluşmaktadır. Çalışmada veri toplama araçları olarak Bilimsel Süreç Becerileri Testi (BSBT) ve Öğrenci Tanıma Formu (ÖTF) kullanılmıştır. BSBT sonuçlarına göre genel olarak matematik öğretmenliği öğrencilerinin diğer bölümlerdeki öğrencilere göre daha başarılı oldukları tespit edilmiştir. Ortaöğretim öğrenimi süresince yapılan deney ve etkinlikler öğrencilerin bilimsel süreç becerilerini geliştirdiği tespit edilmiştir. Deneylerin veya etkinliklerin öğretmenle beraber yapılması öğrencilerin bilimsel süreç becerilerine olumlu yönde katkı sağlamaktadır. Kitap okuma alışkanlığı da bu becerileri kazanmada önemlidir.Anahtar Sözcükler: bilimsel süreç becerileri, İlköğretim öğretmenliği bölümü, öğretmen yetiştirme Abstract The aim of this study was examined factors which affect the 1 st grade students' scientific process skills from the department of elementary education. In this study was used survey research method. The sample of the study was composed of 224 students from the department of elementary education. "Scientific Process Skill Test" and "Student Identification Form" was used as data collection instruments. According to SPST scores, students in programs of elementary mathematics education was determined the most success than. Experiments and activities been done during secondary education develop students' scientific process skills. Experiments or activities that make together with teachers are contributing positively to students' * Doç. Dr., Atatürk Üniversitesi, fsezek@yahoo.com

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The aim of the study was investigation the effect of twice application the Group Investigation method at different intervals on improvement of the students' academic achievement and science process skills in teaching the science lesson. Method of the study was a quasi-experimental design. The study used Solomon Four-group Experimental Design in the first year, and an experimental design in the second year which was created by adding a new experimental group to involve three experimental and two control groups. It was applied the Group Investigation method in the experimental groups and current methods on the curriculum of the secondary school science curriculum of Ministry of National Education in the control groups. Data collection process were used qualitative interview, preliminary information, science process skills and academic achievement tests. Applying the Group Investigation method for two years proved positive contributions to students' academic achievement and science process skills in science lessons. The researchers believe that experimental model developed this stduy will be used in different research areas in long-term studies in the future, and these studies will also make a great contribution to the literature.