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Problem-Based Learning in Teaching Chemistry: Enthalpy Changes in Systems
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Ayyildiz, Yildizay; Tarhan, Leman – Research in Science & Technological Education, 2018
Background: Problem-based learning (PBL) as a teaching strategy has recently become quite widespread in especially chemistry classes. Research has found that students, from elementary through college, have many alternative conceptions regarding "enthalpy changes in systems." Although there are several studies focused on identifying…
Descriptors: Problem Based Learning, Chemistry, Science Instruction, Pretests Posttests
The Effective Concepts on Students' Understanding of Chemical Reactions and Energy
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Ayyildiz, Yildizay; Tarhan, Leman – Hacettepe University Journal of Education, 2012
The purpose of this study was to determine the relationship between the basic concepts related to the unit of "Chemical Reactions and Energy" and the sub-concepts underlying for meaningful learning of the unit and to investigate the effectiveness of them on students' learning achievements. For this purpose, the basic concepts of the unit…
Descriptors: Experimental Groups, Control Groups, Test Results, Grade 11
Active-Learning versus Teacher-Centered Instruction for Learning Acids and Bases
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Sesen, Burcin Acar; Tarhan, Leman – Research in Science & Technological Education, 2011
Background and purpose: Active-learning as a student-centered learning process has begun to take more interest in constructing scientific knowledge. For this reason, this study aimed to investigate the effectiveness of active-learning implementation on high-school students' understanding of "acids and bases". Sample: The sample of this…
Descriptors: Experimental Groups, Control Groups, Achievement Tests, Foreign Countries
Effect of Cooperative Learning Strategies on Students' Understanding of Concepts in Electrochemistry
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Acar, Burcin; Tarhan, Leman – International Journal of Science and Mathematics Education, 2007
The present study was conducted to investigate the degree of effectiveness of cooperative learning instruction over a traditional approach on 11th grade students' understanding of electrochemistry. The study involved forty-one 11th grade students from two science classes with the same teacher. To determine students' misconceptions concerning…
Descriptors: Constructivism (Learning), Chemistry, Learning Strategies, Cooperative Learning
Problem-Based Learning in an Eleventh Grade Chemistry Class: "Factors Affecting Cell Potential"
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Tarhan, Leman; Acar, Burcin – Research in Science & Technological Education, 2007
The purpose of this research study was to examine the effectiveness of problem-based learning (PBL) on eleventh grade students' understanding of "The effects of temperature, concentration and pressure on cell potential" and also their social skills. Stratified randomly selected control and experimental groups with 20 students each were used in…
Descriptors: Grade 11, Teaching Methods, Misconceptions, Group Activities