Enlist micros: Training science teachers to use microcomputers

A National Science Foundation grant to the Biological Sciences Curriculum Study (BSCS) at The Colorado College supported the design and production of training materials to encourage literacy of science teachers in the use of microcomputers. ENLIST Micros is based on results of a national needs assessment that identified 22 compentencies needed by K–12 science teachers to use microcomputers for instruction. A writing team developed the 16-hour training program in the summer of 1985, and field-test coordinators tested it with 18 preservice or in-service groups during the 1985–86 academic year at 15 sites within the United States. The training materials consist of video programs, interactive computer disks for the Apple II series microcomputer, a training manual for participants, and a guide for the group leader. The experimental materials address major areas of educational computing: awareness, applications, implementation, evaluation, and resources. Each chapter contains activities developed for this program, such as viewing video segments of science teachers who are using computers effectively and running commercial science and training courseware. Role playing and small-group interaction help the teachers overcome their reluctance to use computers and plan for effective implementation of microcomputers in the school. This study examines the implementation of educational computing among 47 science teachers who completed the ENLIST Micros training at a southern university. We present results of formative evaluation for that site. Results indicate that both elementary and secondary teachers benefit from the training program and demonstrate gains in attitudes toward computer use. Participating teachers said that the program met its stated objectives and helped them obtain needed skills. Only 33 percent of these teachers, however, reported using computers one year after the training. In June 1986, the BSCS initiated a follow up to the ENLIST Micros curriculum to develop, evaluate, and disseminate a complete model of teacher enhancement for educational computing in the sciences. In that project, we use the ENLIST Micros curriculum as the first step in a training process. The project includes seminars that introduce additional skills: It contains provisions for sharing among participants, monitors use of computers in participants' classrooms, provides structured coaching of participants' use of computers in their classrooms, and offers planned observations of peers using computers in their science teaching.     

Definition in science teaching

Summary Definitions, I have suggested, have both a function and a form. The function pursued and the form used should depend on the situation and on the term being defined. In the situation described at the outset, Mr. Beta should probably have seen to it that a stipulation of some sort was given-just in order to get on with the task at hand. The stipulation might have been based upon a true reported definition-or it might not-depending on political considerations and the linguistic flexibility of the people concerned. Since no one involved could plausibly have been trying to embody a program in a definition of dough, a programmatic definition was not appropriate in that situation.Several different forms for a definition of dough might reasonably have been used, but in this case the old reliable classification form was probably best, because of its completeness, neatness, and brevity. Two reasonable alternatives are the equivalent-expression form and the range form. The synonym, example-nonexample, and operational forms were probably not appropriate.My main point is that there is not just one way to define. I hope that my delineation of some major possibilities and variations will help those who read this article to be flexible in handling problems of definition when they arise; and they arise more often than most people realize.An ealier draft of this article was presented at a colloquium at the University of Illinois in honor of Professor B. Othanel Smith at his retirement.     

合作学习在课堂教学中的实施

1 研究的目的和意义 1.1 传统学习方式的弊病 传统的学习方式把学习建立在人的客体性、受动性和依赖性的基础之上,忽略了人的主动性、能动性和独立性.     

Emotions in teaching environmental science

This op-ed article examines the emotional impact of teaching environmental science and considers how certain emotions can broaden viewpoints and other emotions narrow them. Specifically, it investigates how the topic of climate change became an emotional debate in a science classroom because of religious beliefs. Through reflective practice and examination of positionality, the author explored how certain teaching practices of pre-service science teachers created a productive space and other practices closed down the conversations. This article is framed with theories that explore both divergent and shared viewpoints.     

Science teaching in science education

Reading the interesting article Discerning selective traditions in science education by Per Sund, which is published in this issue of CSSE, allows us to open the discussion on procedures for teaching science today. Clearly there is overlap between the teaching of science and other areas of knowledge. However, we must constantly develop new methods to teach and differentiate between science education and teaching science in response to the changing needs of our students, and we must analyze what role teachers and teacher educators play in both. We must continually examine the methods and concepts involved in developing pedagogical content knowledge in science teachers. Otherwise, the possibility that these routines, based on subjective traditions, prevent emerging processes of educational innovation. Modern science is an enormous field of knowledge in its own right, which is made more expansive when examined within the context of its place in society. We propose the need to design educative interactions around situations that involve science and society. Science education must provide students with all four dimensions of the cognitive process: factual knowledge, conceptual knowledge, procedural knowledge, and metacognitive knowledge. We can observe in classrooms at all levels of education that students understand the concepts better when they have the opportunity to apply the scientific knowledge in a personally relevant way. When students find value in practical exercises and they are provided opportunities to reinterpret their experiences, greater learning gains are achieved. In this sense, a key aspect of educational innovation is the change in teaching methodology. We need new tools to respond to new problems. A shift in teacher education is needed to realize the rewards of situating science questions in a societal context and opening classroom doors to active methodologies in science education to promote meaningful learning through meaningful teaching.     

对科学教学实践的思考

本文以问卷调查为基本方法 ,了解中学师生对科学素养概念的认识 ,了解师生对我国现行物理课程及科学教育的评价 ;并对我国科学教学实践进行了思考 ,提出自己的一些观点。     

Improving science teaching practices

A review of research relating to the problem of using research findings to improve classroom practice is presented. There are two aspects to this problem: familiarizing teachers with relevant research and identifying an aspect of teaching that needs to be improved. Research conducted in local settings appears to have most relevance to teachers and is more likely to be accepted by them. Studies indicate that research can have an impact on practice as long as teachers are involved in identification of problems in their class and are provided with a context in which they can learn the strategies to be implemented and understand why they are likely to improve teaching. Teachers need opportunities to practice teaching in peer groups where errors can be made without jeopardizing student learning; receive performance feedback; practice the strategies in their own classes; observe others teach; and discuss teaching with others. Strategy analysis, coaching and peer coaching are techniques which enable most of these criteria to be met and to facilitate science teaching improvement.     

Implementing curriculum-embedded formative assessment in primary school science classrooms

The implementation of formative assessment strategies is challenging for teachers. We evaluated teachers’ implementation fidelity of a curriculum-embedded formative assessment programme for primary school science education, investigating both material-supported, direct application and subsequent transfer. Furthermore, the relationship between implementation fidelity and teacher variables was explored. N = 17 German primary school teachers participated in professional development on formative assessment, N = 11 teachers formed a control group. Teachers’ implementation fidelity was evaluated via classroom observations student ratings and an analysis of students’ workbooks, focusing on the frequency and quality of intended formative assessment elements (assessments, feedback and instructional adaptations). Regarding direct application, treatment group teachers’ implementation fidelity was high, with slight variations in quality. Regarding transfer, implementation fidelity was lower but teachers still implemented more formative assessment elements than the control group. Teachers’ pedagogical content knowledge and their evaluation of the formative assessment intervention were associated with implementation success.     

Challenge in learning and teaching science

Taking as a basis a conceptualisation of personal challenge having both cognitive/metacognitive (thinking) and affective (feeling) components, the nature and extent of perceived challenge in learning and teaching science were explored for seven teachers and thirty-seven students in five secondary schools over a period of five months. Findings suggest that many secondary students are not challenged by the science they learn in school. Similary, many secondary science teachers are insufficiently challenged by the task of teaching. There are indications, however, that science teaching and learning attitudes and practices can be improved if teachers work to diagnose and change key classroom factors that influence level of perceived challenge in learning.     

Studies on attitude toward teaching science and anxiety about teaching science in preservice elementary teachers

These studies examined attitude toward teaching science (ATTS) using an adaptation of the Bratt Attitude Test (M-BAT); anxiety about teaching science (ANX-TS), as measured by the State-Trait Anxiety Inventory (STAI A-State); and selected demographic variables in preservice elementary teachers for the 1977–1978 and 1978–1979 academic years and a follow-up of those students who completed their student teaching in May 1979. The M-BAT and STAI were administered in September at the beginning of Science 6 (earth science and biology course), in December on the next to last day of Science 6, in May on the next to the last day of Science 5 (physical science), and in May 1979 after student teaching. In the two academic years, both ATTS and ANX-TS became more positive during the sequence Science 6-5. Both changes in ATTS and ANX-TS continued to change in a positive direction after completion of Science 6-5, after student teaching. There were differences in the times that the greatest changes in ATTS and ANX-TS occurred. In both studies, the greatest change in ATTS took place between September and December, during Science 6. The greatest change in ANX-TS, however, took place during Science 5 between December and May in the 1977–1978 study. In the 1978–1979 study, the greatest changes in ANX-TS occurred in Science 6, between September and December. The delayed reduction of ANX-TS in the 1977–1978 study may be explained by differences in teaching patterns. In 1977–1978, two teachers taught only their academic specialty, biology or earth science, to students who switched teachers midsemester. In 1978–1979, the same two instructors taught both biology and earth science to the same students. Correlation coefficients for successive and corresponding administrations of both the M-BAT and STAI suggest these variables are related. Students with more positive ATTS tended to have reduced ANX-TS. Neither the number of high school or college science and math courses completed nor the level of enjoyment of these courses appears to be related to ATTS or ANX-TS for the initial administration of the M-BAT and STAI. Closer examination of data, however, indicates that students with negative ATTS and high ANX-TS were fairly evenly divided in their enjoyment of mathematics, while students with positive ATTS and low ANX-TS enjoyed math in a 3:1 like/dislike ratio. The relationship between both ATTS and ANX-TS and achievement is reasonalbly consistent for Science 6. In Science 5, however, the relationship between ATTS and achievement is inconsistent and there is no indication of a relationship between achievement and ANX-TS.     

从学生实践能力培养探讨食品科学多媒体教学

食品科学课程专业性较强,利用多媒体教学可控性、交互性、集成性强的特点进行教学,将复杂的学科信息形象直观地呈现给学生,达到改善课堂教学,提高学生实践能力的目的。