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Direct linkde 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
Miller, Roxanne Greitz; Calfee, Robert C. – Science and Children, 2004
In order to make a dramatic change in the way teachers approach science writing, the authors found it necessary to address both science instruction as a whole and the use of writing during various stages. To guide them in this endeavor and communicate a concrete idea of an ideal foundation for highly effective science writing to teachers, the…
Descriptors: Knowledge Representation, Science Instruction, Writing (Composition), Models
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
