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Al khawaldeh, Salem A. – Research in Science & Technological Education, 2013
Background and Purpose: The purpose of this study was to investigate the comparative effects of a prediction/discussion-based learning cycle (HPD-LC), conceptual change text (CCT) and traditional instruction on 10th grade students' understanding of genetics concepts. Sample: Participants were 112 10th basic grade male students in three classes of…
Descriptors: Genetics, Science Instruction, Secondary School Science, Biology
Zeidler, Dana Lewis – 1984
Measurements of formal reasoning and principled moral reasoning ability were obtained from a sample of 99 tenth grade students. Specific modes of formal reasoning (proportional reasoning, controlling variables, probabilistic, correlational and combinatorial reasoning) were first examined. Findings support the notion of hierarchical relationships…
Descriptors: Biology, Cognitive Development, Developmental Stages, Grade 10