排序方式： 共有81条查询结果，搜索用时 781 毫秒
1.
2.
Today, science is a major part of western culture. Discussions about the need for members of the public to access and understand scientific information are therefore well established, citing the importance of such information to responsible citizenship, democracy, socially accountable scientific research and public funding (National Research Council [2009] Learning science in informal environments: People, places, and pursuits. National Academies Press). In recent years there has been an increased interest in investigating not just what visitors to informal environments have learnt after a visit, but also how visitors interact and engage with exhibits during the visit (Davidsson & Jakobsson [2012] Understanding interactions at science centers and museums: Approaching sociocultural perspectives. Rotterdam: Sense Publishers). Within the field of school visits to science museums, however, interactions between students and museum educators (MEs) remain relatively unexplored. In our study of such school visits, we are mainly interested in the interactions that take place between three agents—the students, the museum educator and the physical setting of the exhibit. Using moment-to-moment fine grain analysis of multiple interactions allowed us to identify recurring patterns between students and the museum educators around exhibits, and to examine the MEs’ mediational role during the interactions, and the practices they employ to engage students with exhibits. Our study revealed that most interactions between MEs and students consist of technical explanations of how to operate the exhibits. The interactions that do move past this stage often include two main practices, which the MEs use to promote students’ engagement with the exhibits: physical instruction and engaging the students emotionally. Understanding what is actually happening in the learning process that occurs during students’ interactions with exhibits can help museum educators and exhibit designers improve the experiences of students on school visits. 相似文献
3.
An experimental design was adopted in the present study to cross-compare the effect of two formative assessments, namely peer assessment (PA) and teacher assessment (TA), with summative assessment (SA) on the improvement of language learners’ writing skill and self-efficacy. Writing excellence was operationalized by structural (grammar), lexical (word choice), and discoursal (cohesion and coherence) well-formedness. Furthermore, focused group interview was run to elicit the learners' attitudes and preferences toward type of assessment. Three cohorts of proficiency-matched language learners sat for a semester-long experimentation (20 sessions × 90 min = 30 h) and three testing sessions. The results revealed that PA group significantly improved in the writing skill, but TA and SA groups did not. Self-efficacy was not enhanced in any of the assessment groups under study. The interviews and follow-up member checkings indicated that the pupils did not have positive attitudes toward PA and preferred TA. Among the sources of this disfavor, they referred to misunderstanding, lack of knowledge or attention, tiredness, poor handwriting of the assesse, shyness, friendship bias, and even feeling not qualified enough to judge their peers’ tasks. Overall, then, the study reported a mismatch between the students’ actual performance and attitudinal beliefs under different assessment conditions, implying that (a) Iranian students are more inclined toward teacher-dominated pedagogies and (b) triangulation of assessment modes provides more reliable optimal results. 相似文献
4.
The purpose of this study was to describe and understand the range of outcomes of class visits to natural history museums.
The theoretical framework is based on the multifaceted process of learning in free choice learning environments, and emphasizes
the unique and individual learning experience in museum settings. The study’s significance is in highlighting several possible
cognitive as well as non-cognitive learning effects in museums class visits, by providing the student’s point of view. Data
was collected by semi-structured interviews with 50 students in grades 6–8 on the day following the visit. We present evidence
that students expressed several learning outcomes, connected directly and indirectly to the scientific content of the visit.
Content oriented outcomes included acquiring scientific knowledge and making connections to prior knowledge; social oriented
outcomes were identified in students’ statements regarding communicating knowledge and social aspects of learning; and interest
oriented outcomes were evidenced by students’ expressions about emotions, interest and curiosity. The aggregate data addressed
the common outcomes and the impact of class visits to natural history museums in the short term. Comparisons between two types
of museums show significant differences in several aspects, regarding the exhibit and/or the activity type. Practical ideas
for structuring the ultimate experience are included. 相似文献
5.
Tali Tal 《Environmental Education Research》2008,14(3):273-290
The last two decades have seen increased threats to agricultural landscapes in Israel. Key factors include population growth, strong pressure from construction entrepreneurs and possible profit to land owners who benefit from a legal conversion of farmland into lands allocated for construction. While each Israeli elementary school student used to participate in agriculture classes, most students no longer experience this and their overall exposure to farming in schools is limited. The main objective of this study was to explore the ways farming is presented and addressed in the national curriculum and in learning materials. Additionally, it examines the actual status of teaching about agriculture and explores how farming is addressed in teachers' pre‐service programmes. The main finding is that very little teaching about agriculture and land management is carried out at most school levels. Only one college prepares agriculture teachers and science education programmes rarely address agriculture as a course topic. The paper also outlines an education for sustainability framework for integrating science, agriculture and environmental education. 相似文献
6.
Golan T 《Social studies of science》2004,34(4):469-499
The late 19th-century discovery of X-rays befuddled not only the scientific world but also the medical and legal worlds. The possibility of looking into the human body as if through an open window challenged the time-honored medical monopoly over the inner cavities of the human body. Likewise, the possibility of visualizing objects unavailable to the naked eye challenged the established legal theories and practices of illustration and proof. This paper describes the reactions to those challenges by the medical and the legal professions in the USA. The two professions are treated as connected social institutions, producing ongoing negotiations through which legal doctrines affect medicine no less than scientific discoveries and medical applications affect the law. This joint analysis rewards us with a rich story about an early and overlooked chapter in X-ray history on the professionalization of radiology, the origins of defensive medicine, and the evolution of the legal theory and practice of visual evidence. 相似文献
7.
Paulo Blikstein Tamar Fuhrmann Shima Salehi 《Journal of Science Education and Technology》2016,25(4):513-526
In this paper, we investigate an approach to supporting students’ learning in science through a combination of physical experimentation and virtual modeling. We present a study that utilizes a scientific inquiry framework, which we call “bifocal modeling,” to link student-designed experiments and computer models in real time. In this study, a group of high school students designed computer models of bacterial growth with reference to a simultaneous physical experiment they were conducting, and were able to validate the correctness of their model against the results of their experiment. Our findings suggest that as the students compared their virtual models with physical experiments, they encountered “discrepant events” that contradicted their existing conceptions and elicited a state of cognitive disequilibrium. This experience of conflict encouraged students to further examine their ideas and to seek more accurate explanations of the observed natural phenomena, improving the design of their computer models. 相似文献
8.
Emran Ameer Spektor-levy Ornit Paz Tal Ofra Ben Zvi Assaraf Orit 《Science & Education》2020,29(2):237-261
Science & Education - A thorough understanding of the concept of the nature of science (NOS) is essential to the development of scientific literacy among students, as it provides the students... 相似文献
9.
Clodie Tal 《Early Childhood Education Journal》2010,38(2):143-152
This article adds to the existing body of data that demonstrates how the use of in-depth case studies that include social episode analysis can deepen the teaching students’ and researchers’ understanding of the perceptions and skills needed for Classroom Management (CM). In this article, CM is defined as a meta-skill that integrates cognitive perceptions (proactive, ecological-systemic, and leadership-oriented), self-regulation skills, and interpersonal relationships with students and colleagues. CM is also perceived as a cyclical process that includes advance planning, implementation, assessment during the implementation, and a final evaluation that takes into account factors related to the children and their environment, intended to bring about progress in the activities carried out for the learning and emotional well-being of the children in the class. Two cases showing opposite positions with regard to social-moral CM were selected from 34 cases documented by second-year, 4-year-track, preservice teaching students enrolled in a CM course in Israel in the spring of 2008. One case shows how, guided by the desire to ensure a child’s well-being, a student developed perceptions and skills related to all components of the CM theoretical framework. The other case shows how opportunities were missed to learn and develop a social-moral, complex, CM perception. Based on an analysis of the two cases, the discussion examines the usefulness of case studies in teacher training and offers insights related to improved teacher training. 相似文献
10.
Izatus Shima Taib Siti Balkis Budin Seri Maseran Siti Nor Ain Jamaludin Mohamed Santhana Raj Louis Srijit Das Sulaiman Sallehudin Nor Fadilah Rajab Othman Hidayatulfathi 《Journal of Zhejiang University. Science. B》2009,10(11):813-819
Litsea elliptica Blume leaves have been traditionally used as medicinal herbs because of its antimutagenicity, che-mopreventative and insecticidal properties. In this study, the toxic effects of L. elliptica essential oil against Sprague-Dawley rat's red blood cells (RBCs) were evaluated. L. elliptica essential oil was given by oral gavage 5 times per week for 3 treated groups in the doses of 125, 250, and 500 mg/(kg body weight), respectively, and the control group received distilled water. Full blood count, RBC osmotic fragility, RBC morphological changes, and RBC membrane lipid were analyzed 28 d after the treatment. Although L. elliptica essential oil administration had significantly different effects on hemoglobin (Hb), mean cell hemoglobin concentration (MCHC), mean cell volume (MCV), and mean cell hemoglobin (MCH) in the experimental groups as compared to the control group (P<0.05), the values were still within the normal range. L. elliptica induced morphological changes of RBC into the form of echinoeyte. The percentage of echinocyte increased significantly among the treated groups in a dose-response manner (P<0.001). The concentrations of RBC membrane phospholipids and cholesterol of all treated groups were significantly lower than those of control group (P<0.001). However, the RBC membrane osmotic fragility and total proteins of RBC membrane findings did not differ significantly between control and treated groups (P>0.05). It is concluded that structural changes in the RBC membrane due to L. elliptica essential oil administration did not cause severe membrane damage. 相似文献