ERIC Number: EJ791517
Record Type: Journal
Publication Date: 2008-May
Reference Count: 0
Problem-Based Learning in 9th Grade Chemistry Class: "Intermolecular Forces"
Tarhan, Leman; Ayar-Kayali, Hulya; Urek, Raziye Ozturk; Acar, Burcin
Research in Science Education, v38 n3 p285-300 May 2008
This research study aims to examine the effectiveness of a problem-based learning (PBL) on 9th grade students' understanding of intermolecular forces (dipole-dipole forces, London dispersion forces and hydrogen bonding). The student's alternate conceptions about intermolecular bonding and their beliefs about PBL were also measured. Seventy-eight 9th grade students were stratified by cognitive levels and then randomly assigned to experimental (PBL, 40 students) and control (lecture-style teaching, 38 students) groups. Following a preparatory lesson where activation and remediation of existing knowledge occur, a pre-test was given, and no significant difference was found between the two groups of students (p greater than 0.05). After the instruction was completed, a post-test and also a questionnaire related to the quality of the problem, the teacher's role and group functioning were administered. Results from the post-test of both groups (p less than 0.05) and questionnaire showed that PBL is affective on students' achievement, remedying formation of alternate conceptions and also social skills.
Descriptors: Problem Based Learning, Chemistry, Measures (Individuals), Grade 9, Teaching Methods, Science Instruction, Molecular Structure, Secondary School Science, Scientific Concepts, Comparative Analysis
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Publication Type: Journal Articles; Reports - Research
Education Level: Grade 9
Authoring Institution: N/A