共查询到20条相似文献，搜索用时 15 毫秒
1.
Bronwyn Richardson 《高等教育研究与发展》1984,3(1):81-84
The use of instructional design is increasingly being discussed in the distance education and higher education literature. This paper reports an experiment in which self study questions are inserted in the text of lecture note material for external students. An evaluation revealed that students who received notes with in‐text questions were no different from those who received the standard lecture notes as judged by both performance and attitudinal criteria. Possible reasons for the perverse findings are given and it is concluded that professional instructional design assistance would be of value to subject matter experts. 相似文献
2.
Frits F. B. Pals Jos L. J. Tolboom Cor J. M. Suhre Paul L. C. van Geert 《International Journal of Science Education》2018,40(2):227-241
How can science teachers support students in developing an appropriate declarative knowledge base for solving problems? This article focuses on the question whether the development of students’ memory of scientific propositions is better served by writing propositions down on paper or by making drawings of propositions either by silent or muttering rehearsal. By means of a memorisation experiment with eighth- and ninth-grade students, we answer this question. In this experiment, students received instruction to memorise nine science propositions and to reproduce them afterwards. To support memorisation students were randomly assigned either to a group that received instruction to write each proposition on paper or to a group that received instruction to make a drawing about the content of the proposition. In addition, half of the students in both groups received instruction to mutter and the other half of them received instruction to write or draw in silence. The main conclusion from the experiment is that after four weeks students who had made a drawing remembered significantly more propositions than those who had memorised the propositions by writing them down. Our research further revealed that it did not matter whether students muttered or memorised silently. 相似文献
3.
Maria Kallery 《International Journal of Early Years Education》2015,23(1):31-53
In the present study we test the effectiveness of a teaching intervention concerning the phenomenon of floating and sinking as a property of the matter the bodies are made of. The treatment, designed for children aged four to six years, comprises two units of hierarchically sequenced activities. The children experiment with objects having specifically designed characteristics aiming at shifting children's attention from the objects to the material(s) these are made of. Both solid and hollow objects were used. The activities were developed collaboratively by a researcher and early years teachers and were implemented by the teachers of the work group in their own public school classes in a sample of 104 children. Action research processes were used to optimise classroom practices. Teacher preparation took place within the work group before implementation. Concept cartoons were used for the children's final assessment. Analysis of classroom data recorded during the course of the activities showed gradual redirection of the children's attention from the objects to the materials of which they were made. The results of the post-instructional assessment revealed high percentages of pupils understanding the kind of material as the determining factor for the bodies' behaviour in water. 相似文献
4.
现代远程开放教育省级以下电大教师状况评析 总被引：1，自引：0，他引：1
开放教育试点项目实施八年来,我们的着眼点主要放在了新的人才模式的构建和教学模式及管理模式的运行上。在强调学生的主体性的同时,开放教育的实施者往往忽视了教师主导作用的发挥。通过对省级以下电大教师的调查得出结论,不论教育改革如何深入,教育方式和手段如何现代化,也不论各级各类电大教师的职责如何不同,在远程教育中教师的主导地位是不容置疑的。这种主导作用的发挥,一是导学,二是服务,三是自主创新。 相似文献
5.
王方园 《金华职业技术学院学报》2002,2(1):24-26
针对氨基废水的成份和特性，进行了废水静置分离、萃取、加尿素除甲醛、蒸馏脱醇等预处理试验。目的是回收废水中的可利用成份，同时降低废水中的CODcr浓度。根据试验结果，提出了在碱性条件下直接蒸馏脱醇是可行的。既可回收醇5％～7％左右，又能去除CODcr达80％以上。 相似文献
6.
Sue Johnston 《Teaching in Higher Education》2013,18(2):213-225
Abstract Although there has been a growing literature which explores the thinking of teachers at the school level, no such parallel literature exists for university teachers. In this paper, interviews with four academics who received awards for ‘excellent teaching’ are used to explore the way these university teachers view their teaching. The themes which emerged include: a clear sense of what they were on about at teachers and a willingness to manipulate the learning environment accordingly; an emphasis on student learning and the importance of students learning the subject matter; an enjoyment of teaching; and a lack of perceived constraints to change their teaching and experiment with new ideas. 相似文献
7.
李杨王坛华 《福建工程学院学报》2020,(1):35-39
以福州地区软土作为研究对象,在测试与分析土样的基本物理性质、易溶盐含量、阳离子交换容量和有机质含量等基本参数的基础上,通过对4种外掺剂方案加固后土样无侧限抗压强度值进行测试,研究了不同外掺剂方案下水泥加固软土的效果。研究表明:福州地区有机质土样的有机质含量较高。成分以富里酸为主,胡敏酸次之;为了达到更好的加固效果,应选取对富里酸和胡敏酸都有抑制作用的外掺剂,本次试验中选取的硫酸钙效果最好;对福州及沿海地区的高黏性、高有机质含量的软土,在采用水泥作为固化剂时,应结合其粒度成分、易溶盐、有机质总量和分量综合考虑,选择合适的外掺剂。 相似文献
8.
Robert Charles Olsen 《科学教学研究杂志》1973,10(3):271-277
This experiment was designed to assess the effects of behavioral objectives on class achievement and retention. Eight experimental classes received instruction in physical science with stated behavioral objectives and six control classes received the same instruction without knowledge of the objectives. The subject matter used in this ninth-grade investigation was the third unit of the program, Interaction of Matter and Energy. Behavioral objectives and their accompanying assessment tasks were written by the investigator for the subject matter areas of heat energy, light energy, and phases of matter. The experimental classes obtained higher mean scores than the control classes on both achievement and retention tests. The overall mean differences due to treatment was found to be significant at the 0.01 level of confidence. The results of the study support the thesis that providing classes and teachers with behavioral objectives prior to instruction can enhance the performance on achievement tests. Also, the data strongly suggest that behavioral objectives and their accompanying assessment tasks will cause a resistance to forgetting. 相似文献
9.
本文主要研究了稀土甘氨酸络合物 (简称MRG)的对柑桔生产的影响 .结果表明 :当用 1.2 3× 10 -3 mol·L-1MRG分别于花期和幼果期进行叶面喷施后 ,能促进柑桔的生长 ,改善柑桔果实的品质 ,提高果实着色面积和着色浓度 ,产量亦有所提高 相似文献
10.
完善素质化与能力化实验教学体系,既注重纵向知识的系统性,又注重横向知识的相互渗透,使实验教学最大限度地挖掘学生的知识潜能,有利于学生科研素质与创新能力的培养,为学生创造研究性学习的空间。为此,介绍几个有关颗粒物质的趣味实验,通过观察地球上存在最多、最为人们所熟悉的颗粒,从中了解大量颗粒组成的离散态物质体系具有的特别性质和运动规律,从而培养学生对物理实验的兴趣,使之能够善于发现和认识有意义的新知识、新事物、新方法,掌握其中蕴含的基本规律,并具备相应的能力。 相似文献
11.
介绍了一种分别用塑料袋供气和接收新生成物质,在封闭的粗玻管里完成氧气性质试验和对生成物进行抽样鉴定的新方法. 相似文献
12.
Billie Eilam 《科学教学研究杂志》2004,41(10):970-993
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 relations within their explanations, and to construe students' mental models for the science phenomenon based on level of specification, models' correspondence with scientific claims, macro versus micro view of matter, and type of evidence used. We then inferred four types of knowledge representations for the nature of matter. Findings are discussed in terms of implications for science teaching. © 2004 Wiley Periodicals, Inc. J Res Sci Teach 41: 970–993, 2004 相似文献
13.
为了深入了解桂西北地区石漠化治理和土壤生态恢复的现状,作者对广西宜州、环江、平果等地进行了实地调查,并从海拔高度、恢复年限、植被类型等角度,对桂西北石漠化地区封山育林、吊丝竹、任豆等不同植被恢复模式样地的土壤水分、容重、孔隙度及土壤有机质含量等进行了比较分析,试图了解不同植被恢复模式对石漠化地区生态恢复过程中土壤肥力的影响,结果表明,与豆科植物混交的植被恢复模式,其土壤有机质含量较高,其他相关的理化分析指标也较好,因此,可以将之作为石漠化土地植被恢复的优化模式。 相似文献
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15.
在中学阶段,我们并不指望学生去发现什么新元素,合成什么新物质,仅仅是要求学生运用探索性实验独立地去接受和掌握新知识,让其思维向高层次发展。 相似文献
16.
国家新颁发的课程标准,不仅事关中学教育的突破和发展,也与高校师范教育息息相关。本文以物理教法实验为例,阐述高校师范教育者认真并学习掌握课程标准,树立新理念,精心组织以人为本的合作、探究、创新的物理教法实验课,对师范生接受课程标准、创新学习的影响和作用。 相似文献
17.
This paper describes an experiment devised to increase our understanding of good teaching practices. Each of two instructors selected a topic and on two consecutive mornings they taught a topic of their choice to a group of 21 experienced and competent tertiary educators but without expertise in the subject area being taught. The organization of the experiment is outlined, and the subject matter selected and strategies adopted by the instructors are described. Outcomes of the experiment are reported in two ways: in terms of general comments provided by the independent evaluator and in terms of the participant's reactions to the exercise. While mathematics teaching was the basis of this study, the peer review process described has general applicability to all disciplines. 相似文献
18.
Numerous studies were conducted to investigate how recipients are affected by the miscellaneous characters in multimedia. However, there is a lack of research concerning the connection between parasocial processes and learning performances. This study aims to investigate the influence of addressing (as a social encounter of parasocial interaction) on learning performance in an educational video. Addressing was operationalized by manipulating proximity (near vs. far) and orientation (frontal, vs. lateral) of a presented lecturer. We conducted an experiment with 88 participants who were randomly assigned to one of the four experimental groups. Results revealed a large significant orientation effect for retention performance with higher learning outcomes for frontal orientation. Proximity did not significantly influence learning outcomes. Results were interpreted suggesting perceived parasocial interaction which was enhanced in the frontal condition. Parasocial interaction might lead to deeper cognitive processing and affective states which are beneficial for learning. The findings of this study show that learning is fostered by personae in educational learning environments by giving learners the impression to be addressed directly through eye contact. 相似文献
19.
王较过 《咸阳师范学院学报》2001,16(1):65-68
讨论了卢瑟福探索原子结构和质子的一系列实验以及他所做的理论分析,从而揭示了发现质子的历史过程.根据卢瑟福所做的一系列研究工作,从多方面分析了卢瑟福科学研究的独特方法和他的科学思想,指出卢瑟福是对发现质子做出了最重人贡献的科学家. 相似文献
20.
An experiment in which four qualities of screen image from the same educational television programme were presented to randomised groups of school sixth‐form students is described. Picture quality was found to influence significantly short‐term recall of factual visual information from the programme, a matter having implications for broadcast standards and capital investment in ETV. Subsidiary findings regarding performance differences on visual recall tests according to sex and sixth‐form subjects studied are also reported. 相似文献