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de la Vega-Herna´ndez, Karen; Antuch, Manuel – Journal of Chemical Education, 2015
A vectorial representation of the full sequence of events occurring during the 2D-NMR heteronuclear single-quantum correlation (HSQC) experiment is presented. The proposed vectorial representation conveys an understanding of the magnetization evolution during the HSQC pulse sequence for those who have little or no quantum mechanical background.…
Descriptors: Correlation, Quantum Mechanics, Science Experiments, Magnets
Eilam, Billie – Journal of Research in Science Teaching, 2004
This study investigates how 25 junior high school students employed their bodies of knowledge and responded to problem cues while individually performing a science experiment and reasoning about a drops phenomenon. Line-by-line content analysis conducted on students' written ad hoc explanations aimed to reveal students' concepts and their…
Descriptors: Junior High School Students, Science Experiments, Cues, Content Analysis
Morrison, Judith A.; Lederman, Norman G. – Science Education, 2003
Research has established that students enter their science classes with ideas about the natural world that do not align with accepted scientific beliefs. The diagnosis of these student preconceptions may be seen as an initial, crucial step in the process of teacher-facilitated conceptual change. So as to capture what science teachers do in their…
Descriptors: Student Attitudes, Knowledge Level, Concept Formation, Science Teachers