The study aims to search the effect of guided inquiry laboratory experiments on students' attitudes towards chemistry laboratory, chemistry laboratory anxiety and their academic achievement in the laboratory. The study has been carried out with 37 third-year, undergraduate science education students, as a part of their Science Education Laboratory Applications I and II courses. In Science Education Laboratory Applications I course traditional laboratory method has been conducted, in Science Education Laboratory Applications II course guided inquiry laboratory experiments have been conducted. At the beginning of the academic year, Chemistry laboratory Attitude Scale and Chemistry Laboratory Anxiety Scale were administered as pre test and they were administered as post test following to the guided inquiry experiments. The findings have revealed that as a result of the applications, there has been a significant increase in students' attitudes towards chemistry laboratory, and their academic achievement and a decrease in their chemistry laboratory anxiety.

Studies show that there are difficulties in learning the subject of acids and bases. For this reason, in the scope of the study, case studies which use daily life context are used to help students to establish the relation between acid-bases and daily life. In the content of the study, it was aimed to provide hands-on learning opportunities with performing experiments in the laboratory. It was thought that argument based science learning supported with authentic case studies would facilitate the students to learn the concepts of acid and base and support the development of their scientific process skills. The study aimed to investigate the effect of argumentation-based science teaching approach on 8th graders' learning of the subject of acids and bases, their attitudes towards science class and their scientific process skills. The sample of the study consisted of 69 8th grade students from two different classes attending Science and Technology Course at a government school. The quasi-experimental research design which is one of the quantitative research designs was used in the content of the study. The experimental group was taught through Argumentation Based Science Learning Approach and the control group was taught through didactic teaching approach. The academic achievement test for the subject of acids and bases, Science Class Attitude Scale and Science Process Skills test were administered as pre-test prior to the application and post test following to the application. The results revealed that the argumentation based science teaching approach was more effective than the didactic teaching approach while learning the subject of acids and bases. The findings displayed that the academic achievement of the students taught with argumentation based approach was higher than the ones taught with didactic teaching approach. The findings of the study displayed that the Argumentation Based Science Learning Effect had no significant effect on students' attitudes towards science class. But the approach had a significant effect on students' science process skills.

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Bu çalışmanın amacı, fen bilgisi öğretmen adaylarının "Isı-Sıcaklık" ve "Maddenin Halleri" konularına ilişkin kavram yanılgıları arasındaki ilişkinin incelenmesidir. Bu çalışmada nitel araştırma desenlerinden biri olan fenomenoloji deseni kullanılmıştır. Çalışma grubunun seçiminde amaçlı örnekleme yöntemleri içerisinde yer alan ölçüt örneklemesi tercih edilmiştir. Araştırmanın çalışma grubunu 2017-2018 eğitim öğretim yılı bahar döneminde, Akdeniz bölgesinde yer alan bir devlet üniversitesinin eğitim fakültesinde fen bilgisi öğretmenliği programında öğrenim gören 68 fen bilgisi öğretmen adayı oluşturmaktadır. Veri toplama aracı olarak araştırmacılar tarafından alanyazın incelemesi sonucunda hazırlanan "Isı-Sıcaklık Kavram Testi" ve "Maddenin Halleri Kavram Testi" kullanılmıştır. Verilerin analizinde ise betimsel, içerik ve sayısal analiz kullanılmıştır. Verilerin analizi sonucunda, öğretmen adaylarının "Maddenin Halleri" ve "Isı-Sıcaklık" konularına ilişkin kavram yanılgılarının olduğu tespit edilmiştir. Fen bilgisi öğretmen adaylarının ısıyı "enerji dönüşümü", sıcaklığı ise "sıcaklığın ya da soğukluğun göstergesi" şeklinde tanımladıkları belirlenmiştir. Ayrıca erime-buharlaşma-süblimleşme kavramlarına ilişkin en fazla ortaya çıkan kavram yanılgısının "sıcaklık artar", donma-yoğunlaşma-kırağılaşma kavramlarına yönelik ise en fazla ortaya çıkan kavram yanılgısının "sıcaklık azalır" olduğu tespit edilmiştir. Öğretmen adaylarının ısı transferi, ısının akış yönü, ısı ve sıcaklığın maddenin hal değişim olayındaki rolüne yönelik bilgilerinde bilimsel olarak yanlışlıklar olduğu belirlenmiştir. Ayrıca öğretmen adaylarının günlük yaşam örneklerinde ısı-sıcaklık ve maddenin halleri konularını birbiriyle ilişkilendiremedikleri belirlenmiştir.