This study aims to compare the effectiveness of a Peer-Led Team Learning (PLTL) model with that of traditional college instruction (TCI) in enhancing the conceptual understanding and reducing both the state anxiety and social anxiety of undergraduate engineering students in a general chemistry course in a quasi-experimental design. 128 engineering students taking the course participated in the study. One of the course sections was randomly assigned to the experimental group and the other section was assigned to the control group. Both sections were taught by the same instructor. The control group was instructed using traditional college instruction, while the experimental group was instructed using the PLTL model. Throughout this study, six peer-led chemistry workshops and leader training sessions were performed simultaneously. The General Chemistry Concept Test, the State–Trait Anxiety Inventory, and the Social Anxiety Questionnaire for Adults were administered before and after the treatment to both groups. One-way Multivariate Analysis of Covariance (MANCOVA) indicated that after controlling students’ university entrance scores, trait anxiety scores and pre-test scores of both the General Chemistry Concept Test and state anxiety, the PLTL model was more effective in improving the conceptual understanding and reducing the situational anxiety of engineering students in undergraduate general chemistry. However, it was not so effective in lessening their social anxiety when compared to traditional college instruction.

The purpose of this study was to compare freshmen engineering students' exam achievement in general chemistry course using peer-led team learning model and traditional instruction and to investigate the effect of this model on different achieving level students. A total of 128 students who were instructed by the same professor participated in the study. Throughout the semester, Peer-Led Team Learning (PLTL) model was implemented in the experimental group while traditional instruction was used in the control group. 14 peer leaders who have successfully completed general chemistry course in previous semester have been trained on basic communication and pedagogy issues and they have supported their teams in problemsolving. Both experimental and control group students took the same mid-terms and final exam. The data were analyzed by two-way analysis of variance (ANOVA). Consequently, although there was no statistically significant main effect of teaching methods, due to statistically significant interaction effect, it was found that low and medium achievers' general chemistry exam grades were statistically higher in PLTL group than those of traditional group; however, there was no statistically significant mean difference in high achievers' grades between PLTL and traditional instruction groups. Akran-Liderliğinde Takım Öğrenmesi Modelinin Üniversite Öğrencilerinin Genel Kimya Sınav Başarısı Üzerindeki Etkisinin İncelenmesiMakale Bilgisi Öz DOI: 10.14686/buefad.412614 Bu çalışmanın amacı, mühendislik fakültesi birinci sınıf öğrencilerinin genel kimya ders başarısını akran liderliğinde takım öğrenmesi modeli ve geleneksel öğretim modeli kullanılan durumlarda karşılaştırmak ve yöntemin farklı başarı seviyelerindeki öğrenciler üzerinde etkisini incelemektir. Çalışmaya aynı öğretim üyesinin okuttuğu toplam 128 öğrenci katılmıştır. Deney grubu bir dönem boyunca Akran Liderliğinde Takım Öğrenmesi (ALTÖ) modeli ile ders yaparken kontrol grubunda geleneksel öğretim uygulanmıştır. Daha önceden bu dersi başarı ile tamamlamış 14 takım lideri dönem boyunca hem temel iletişim ve pedagoji konularında eğitilmiş, hem de takımlarına problem çözme konusunda destek olmuştur. Deney ve kontrol grubu aynı ara sınavlara ve final sınavına girmiştir. Veriler iki yönlü varyans analizi (two-way ANOVA) ile incelenmiştir. Sonuç olarak, her ne kadar öğretim yöntemlerinin istatistiksel olarak anlamlı bir etkisi olmasa da, istatistiksel olarak anlamlı çıkan ortak etki faktörüne bağlı olarak, düşük ve orta düzey başarılı öğrencilerinden ALTÖ modeliyle öğretim alanların geleneksel öğretim alan gruba göre genel kimya sınav başarı notlarının istatistiksel olarak daha iyi olduğu bulunmuş, ancak ALTÖ modeli ve geleneksel öğretim gruplarındaki yüksek başarılılar karşılaştırıldıklarında genel kimya başarıları açısından bir farklılık olmadığı saptanmıştır. IntroductionSchool dropout rates among university students in the first years are very high (Barefoot, 2004) and one of the most important reasons for this is their failure (Şimşek, 2013). Personal ...

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Abstract. The purpose is to find out whether state and test anxiety can predict general chemistry grade in peer-led team learning group (PLTL) and non-PLTL groups and to explore their predictability of the grade after controlling the influence of trait anxiety. The sample consisted of a total 128 freshman engineering students attending general chemistry in a private university. STAI and RTT instruments and exams were used to generate data which were analyzed by using standard and hierarchical multiple regression. The findings revealed that in both groups the combination of predictors is significantly related to general chemistry grade, having the strongest unique contribution of test anxiety; however, it was only statistically significant for PLTL group. After controlling the effect of trait anxiety, test anxiety still makes a unique significant contribution for PLTL group. Accordingly, test anxiety can be used to predict the general chemistry grade of PLTL students.