In bringing together the work of leading chemistry educators who are researching the triplet relationship at the secondary and university levels, the book discusses the learning involved, the problems that students encounter, and successful approaches to teaching. Based on the reported research, the editors argue for a coherent model for understanding the triplet relationship in chemical education.

During interviews preservice nurses were asked to manipulate a range of such nursing devices as syringes, drain bottles, intravenous giving sets and aspirators. They were questioned about their knowledge of aspects of fluid dynamics. They were then asked to measure the interviewer's blood pressure and asked about the pressures they observed and about their knowledge of blood flow and the function of the sphygmomanometer. They were also questioned about respiration and the function of the respirator. It was found that those who had alternative conceptions of atmospheric pressure, fluid...