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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