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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