Cost‐effective teaching of radiology with preclinical anatomy

Graduating physicians in all subspecialties have an increased need for competency in radiology, particularly since the use of diagnostic imaging continues to grow. To integrate the teaching of radiology with anatomy during the first year of medical school at Howard University, a novel approach was developed to overcome the limitations of resources including funding, faculty, and curricular time. The resulting program relies on self‐study and peer‐to‐peer interactions to develop proficiency at manipulating free versions of medical image viewer software (using the DICOM standard), identifying normal anatomy in medical images, and applying critical thinking skills to understand common clinical conditions. An effective collaborative relationship between a radiologist and anatomist was necessary to develop and implement the program of anatomic–radiographic instruction which consists of five tiers: (1) initial exposure to anatomy through dissection which provides a foundation of knowledge; (2) study of annotated radiographs from atlases; (3) a radiology quiz open to group discussions; (4) small group study of clinical cases with diagnostic images; and (5) radiographic tests. Students took all quizzes and tests by working from image datasets preloaded on their personal computers, mimicking the approach by which radiologists analyze medical images. In addition to stimulating student support of a new teaching initiative, the strengths of Howard's program are that it can be introduced into an existing preclinical curriculum in almost any medical school with minimal disruption, it requires few additional resources to implement and run, and its design is consistent with the principles of modern education theory. Anat Sci Educ 11: 196–206. © 2017 American Association of Anatomists.     

Pavlovian appetitive discriminative conditioning inAplysia californica

Three experiments demonstrated Pavlovian appetitive discrimination learning in the marine mollusc,Aplysia californica. In each experiment, subjects were exposed to two conditioned stimuli; one stimulus (CS+) was paired with food presentations and the other stimulus (CS?) was never followed by food. In Experiments 1 and 3 different chemosensory stimuli were used, and in Experiment 2 different tactile stimuli were used. For both types of conditioned stimuli, bite responses occurred significantly more often to the CS+ than to the CS?. Experiment 2 also showed thatAplysia could learn a reversal of this discrimination. Experiment 3 showed that nonreinforced presentations of CS+ resulted in a decline in the frequency of conditioned biting. The implications of these results for neurobiological analyses of learning are discussed.     

Teaching High School Physics With a Story-Line

High school physics curricula are designed to meet a number of goals, all of which compete for classroom and homework time. The process-oriented goals include the development of skills in problem solving, measurement, analyzing data, and research, particularly in this world of internet based, unfiltered information. Content goals, on the other hand, insist on mastery or, at least, exposure to kinematics, dynamics, geometrical and physical optics, fluid dynamics, electric and magnetic fields, circuits, electromagnetism, nuclear physics, relativity, and quantum mechanics. Infusing history and nature of science topics into this already packed agenda is a challenge for even the most gifted of teachers.     

The role of paraphrased adjunct questions in facilitating learning from prose

Twenty-six college student read a 5000-word prose passage and answered either verbatim or paraphrased inserted questions while reading about international communication. Students either were or were not permitted to review the text while answering the inserted questions. On a subsequent post-test containing new paraphrases of the adjunct questions, students who received paraphrased adjunct questions outperformed students who received verbatim adjunct questions. This result supported the contention that paraphrased adjunct questions could facilitate meaningful learning from prose.     

Teachers' Perceptions of Teaching Environmental Issues Within the Science Curriculum: A Hong Kong Perspective

The present study was an exploratory study of Hong Kong secondary school Integrated Science teachers' perceptions of environmental education. Both questionnaire survey and interviews were used. Teachers were classified according to their scores of attitudes, perceived barriers, and current emphasis on teaching environmental education. This study found that Integrated Science teachers' attitudes toward environmental education, skills of teaching environmental education, beliefs in the relevance of Integrated Science to environmental education, and intentions of teaching environmental education in Integrated Science classes were associated with their actual ways of teaching of environmental education. Teachers tended to teach more environmental education if they held more favorable attitudes toward environmental education, had more skills of teaching environmental education, believed more in the relevance of Integrated Science to environmental education, and would actually want to teach more environmental education in Integrated Science classes if there were fewer constraints. Moreover, variations in the teaching of environmental education were reflected by teachers' emphasis on teaching environmental education, and their use of a variety of teaching methods and their regular practices of extracurricular activities on environmental education.     

The Influence of Ernst Mach in the Teaching of Mechanics

We present Newton's main ideas for the formulation of classical mechanics as given in the Principia. Then we discuss Ernst Mach's criticisms of Newtonian mechanics as contained in his book The Science of Mechanics. We analyze the influence of Mach's ideas in the teaching of classical mechanics considering five representative textbooks: those of Kittel, Knight and Ruderman; Marion and Thornton; Symon; Feynman, Leighton and Sands; and Goldstein. We conclude that the influence of Mach's ideas has been very great, being incorporated in the textbooks, although not always with the deserved acknowledgment.     

Der Einfluss von aufmerksamkeitslenkenden Instruktionen auf das Erlernen einer Schlagbewegung im Golf

Among other things instructions serve the purpose of directing the recipient’s attentional focus. Several studies have demonstrated the advantage of an attentional focus away from one’s body (external) and towards the effect of the movement over an attentional focus on the movement itself (internal). In contrast, other studies have shown that the advantage of an external focus cannot be generalized. The present study utilized a golf putting task to investigate the effectiveness of an internal versus an external focus. Furthermore, the present study investigated whether participants complied with the instructions with the respective focus during the learning phase. Moreover, in addition to the performance on the putting task the movement execution was also examined. The results showed that the internal as well as the external group switched between the internal and external focus and additionally modified a neutral focus. There was no correlation between hitting performance and movement variability, but a correlation between the neutral focus and the movement variability was found. The results challenge empirical analysis and the results of research about attentional focus.     

Using computer simulations to enhance conceptual change: The roles of constructivist instruction and student epistemological beliefs

Learners enter the classroom with informal ideas (alternative conceptions) about scientific phenomena; these ideas affect how the corresponding scientific explanations are learned. In addition, studentsÕ epistemological beliefs concerning learning influence achievement. This study investigated the effects of a constructivist versus objectivist learning environment on college studentsÕ conceptual change, using a computer simulation of the human cardiovascular system as an instructional tool. This study also investigated the interaction between constructivist versus objectivist learning situations and the studentsÕ epistemological beliefs. The constructivist approach resulted in significantly greater conceptual change than the objectivist approach for 2 of 6 commonly held alternative conceptions; the other 4 of 6 areas showed no significant differences for treatment group. More important, however, the treatment interacted significantly with epistemological beliefs. Individuals with more advanced epistemological beliefs learned more with a constructivist treatment; individuals with less developmentally advanced beliefs learned more with an objectivist treatment. © 1998 John Wiley & Sons, Inc. J Res Sci Teach 35: 145–160, 1998.