Determining the level of inquiry in teachers' questions     

George T. Ladd  Hans O. Andersen 《科学教学研究杂志》1970,7(4):395-400

The purpose of this investigation was to determine if an instrument, originally designed to classify levels of teachers' questions on the basis of logical operations, could be utilized to measure the level of inquiry present in a classroom discussion and to determine if the inquiry questioning behavior of the teacher influenced student achievement. The results of the study show that the modified classification scheme could accurately and reliably measure the inquiry level of teachers' classroom questions. The data also indicated that teachers who ask a greater proportion of high inquiry questions cause a greater change in students as measured by an achievement examination.  相似文献   

Child abuse: adolescent records vs. adult recall   总被引：4，自引：1，他引：4  

D Della Femina  C A Yeager  D O Lewis 《Child abuse & neglect》1990,14(2):227-231

In a follow-up study of incarcerated Connecticut youth, 69 subjects were interviewed during young adulthood. On follow-up, 26 gave histories of abuse discrepant with histories obtained from records and interviews conducted in adolescence. Eleven subjects agreed to an additional clarification interview, at which time they were apprised of the discrepancies. Of these, eight had adolescent records indicating that abuse had occurred but denied abuse during the adult follow-up interview. The remaining three had adolescent records indicating no abuse had ever occurred, but, on follow-up, reported having been abused. The additional clarification interviews revealed that all 11 subjects with discrepant histories had, in fact, been abused. Reasons for these discrepant data and strategies to enhance the investigator's ability to obtain accurate data regarding abuse are discussed.  相似文献   

Effects of modeling on preservice science teachers during ISCS microteaching sessions     

Richard J. Rezba  Hans O. Andersen 《科学教学研究杂志》1976,13(1):13-18

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The effect of concept mapping on students' anxiety and achievement in biology     

Olugbemiro J. Jegede  Folusho F. Alaiyemola  Peter A. O. Okebukola 《科学教学研究杂志》1990,27(10):951-960

The results of recent studies into the use of the concept mapping heuristic seem to demonstrate that meaningful learning results through its use in science classrooms. While this underscores the need to use more effective instructional strategies in science teaching, the issue of the intervening variable of anxiety in learning and science achievement, and the possible use of a metacognitive strategy in anxiety reduction have not been addressed. This study, therefore, sought to find out if the metacognitive strategy of concept mapping reduces anxiety and thereby enhances achievement in biology. A total of 51 (30 boys, 21 girls) senior secondary one (grade 10) students participated in this experiment. Two instruments—the Zuckerman Affect Adjective Checklist and the Biology Achievement Test—were used in pre- and posttest administrations to measure the treatment effect on anxiety and achievement, respectively. Findings support the stand that concept mapping is significantly more effective than the traditional/expository teaching strategy in enhancing learning in biology. In addition, it apparently reduces students' anxiety towards the learning of biology. A significant reduction of anxiety was noticed for male subjects.  相似文献   

Curriculum Design of a Flipped Classroom to Enhance Haematology Learning     

Pauline?A.?Porcaro  Denise?E.?Jackson  Patricia?M.?McLaughlin  Cindy?J.?O’MalleyEmail authorView author&#;s OrcID profile 《Journal of Science Education and Technology》2016,25(3):345-357

A common trend in higher education is the “flipped” classroom, which facilitates active learning during class. The flipped approach to teaching was instituted in a haematology ‘major’ class and the students’ attitudes and preferences for the teaching materials were surveyed. The curriculum design was explicit and involved four major components (1) the preparation of the students; (2) the weekly pre-class work; (3) the in-class active learning strategies and (4) closing the learning loop using formative quizzes. Each of these components is discussed in detail and was informed by sound pedagogical strategies. Several different sources of information and several freely available software tools to engage the students are discussed. Two iterations are reported here, with improved pass rate for the final examination from 47 to 48 % in the traditional class to 56–65 % in the flipped classroom approach. The majority of students (93 and 89 %) came to the class prepared, after viewing the screencasts and engaged fully with the activities within the face-to-face time. The students perceived that solving case studies (93 %) was the most beneficial activity for their learning and this was closely followed by the production of essay plans (71 %). The majority of students recommended that this approach be repeated the following year (69 and 75 %).  相似文献   

Isabelle Y. Liberman     

Sylvia O. Richardson 《Annals of dyslexia》1990,40(1):viii-viii

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Pre-service physical education teachers’ Indigenous knowledge,cultural competency and pedagogy: a service learning intervention     

Louisa R. Peralta  Donna O’Connor  Wayne G. Cotton  Andrew Bennie 《Teaching Education》2016,27(3):248-266

In this paper, we investigate the effects of a community- and school-based service learning experience (SLE) on pre-service physical education teachers’ Indigenous knowledge, cultural competency and pedagogy. Informed by the theoretical tenets of Indigenous research methodologies, experiential learning and critical reflection, we examine 55 final-year pre-service physical education teachers’ (age: 21.9 [8.3]; 10.7% low SES; 68% females) cultural learning and competency in a core unit of study with a six-week SLE. Measures of their experiences included reflective journals, multicultural teaching competency scales and focus group interviews. Findings support the design of the SLE, with statistically significant changes in pre-service teachers’ perceptions of their cultural competency (p < 0.001). Pre-service teachers were able to challenge their assumptions about Indigenous students, plan and implement student-centred and culturally relevant pedagogies. Attention is drawn to the design of this SLE and demonstrates the importance of using Indigenous community members and teachers as mentors, which has not been explored in previous SLE studies.  相似文献   

Improving the learning of Boolean queries by means of a multiobjective IQBE evolutionary algorithm     

O. Cordón  E. Herrera-Viedma  M. Luque 《Information processing & management》2006

The Inductive Query By Example (IQBE) paradigm allows a system to automatically derive queries for a specific Information Retrieval System (IRS). Classic IRSs based on this paradigm [Smith, M., & Smith, M. (1997). The use of genetic programming to build Boolean queries for text retrieval through relevance feedback. Journal of Information Science, 23(6), 423–431] generate a single solution (Boolean query) in each run, that with the best fitness value, which is usually based on a weighted combination of the basic performance criteria, precision and recall.  相似文献   

Acrosin activity in spermatozoa of infertile Nigerian males     

M. A. Emokpae  P. O. Uadia 《Indian journal of clinical biochemistry : IJCB》2006,21(1):199-201

The objective of this study was to evaluate acrosin activity in spermatozoa of infertile Nigerian men and to compare with those of the fertile men. The acrosin activity was evaluated using the Acroscreen reagent kit. The acrosin activity of the fertile men was 40.7±5.2 mIU/10⁶ sperm (range 30.1–51.3) and those of the infertile men was 22.4±8.33 mIU/10⁶ sperm (range 5.7–39.1). The difference in the mean was statistically significant (P<0.001). There was a subpopulation of the infertile men who had their acrosin activity within normal range of the fertile men, 32.9±1.57 mIU/10⁶ sperm. But the difference in the mean was statistically significant (P<0.001). Acrosin activity decreased with increased morphological changes in the spermatozoa. It is concluded that acrosin activity in the infertile Nigerian men is significantly lower than that in the fertile men. Acrosin activity may also be affected by morphological changes in the spermatozoa.  相似文献   

pre-operative serum potassium levels and peri-operative outcomes in patients undergoing cardiac surgery     

O. P. Sanjay 《Indian journal of clinical biochemistry : IJCB》2004,19(1):40-44

Although potassium is critical for normal electro physiology, the associations between pre-operative serum potassium level and peri-operative adverse events such as arrhythmias in cardiac surgery have not been examined in detail. The objective of this study was to determine the prevalence of abnormal pre-operative serum potassium levels and whether such levels were associated with adverse peri-operative events in 50 patients undergoing coronary artery bypass grafting. Intra-operative and post-operative arrhythmias, the need for cardio-pulmonary resuscitation, cardiac death and death due to any cause prior to discharge from the post-operative intensive care unit were studied. The incidence for adverse outcome was 0.5% for death, 0.5% for cardiac death and 2% for cardio pulmonary resuscitation in patients with hypokalemia (serum potassium level <3.5 meq. L⁻¹). Hypokalemia was found to be a predictor of serious peri-operative (OR:2.2; 95% Cl: 1.2–4.1) and post-operative arrhythmias (OR: 1.7;95%Cl: 1.0–2.7). Pre-operative potassium repletion is low cost and low risk treatment measure and the data from this study suggests that screening and repletion be considered in patients scheduled for cardiac surgery.  相似文献