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1.
Assessment of student learning in complex areas is challenging, particularly when there is interest in students’ deeper understanding and connectivity of concepts. Assessment of ethics learning has been limited by lack of consensus regarding what is effective and an overfocus on quantification at the expense of clinical or ethical relevance. Cognitive maps provide one means to evaluate depth and personal meaning of students’ ethics knowledge. A pre-/post-test design using cognitive maps and the structure of observed learning outcome (SOLO) taxonomy was used to assess student learning on completion of a six-week intensive ethics course. Thirty-seven students completed the research. Student learning was supported by significant changes in component (content, labelling, relationships and structure/visual message), and total pre- and post-test cognitive map scores, and significant change in pre- and post-test SOLO scores. A strong relationship was found between cognitive map improvement and SOLO improvement. Student written commentaries describing their post-test cognitive map provided a richer, more elaborated account of their understanding that qualitatively enhanced their cognitive maps. Cognitive maps offer an alternative to traditional ethics assessment strategies.  相似文献   

2.
The psychometric characteristics and practicality of concept mapping as a technique for classroom assessment were evaluated. Subjects received 90 min of training in concept mapping techniques and were given a list of terms and asked to produce a concept map. The list of terms was from a course in which they were enrolled. The maps were scored by pairs of graduate students, each pair using one of six different scoring methods. The score reliability of the six scoring methods ranged from r = .23 to r = .76. The highest score reliability was found for the method based on the evaluation of separate propositions represented. Correlations of map scores with a measure of the concept maps' similarity to a master map provided evidence supporting the validity of five of the six scoring methods. The times required to provide training in concept mapping, produce concepts, and score concept maps were compatible with the adoption of concept mapping as classroom assessment technique. © 1999 John Wiley & Sons, Inc. J Res Sci Teach 36: 475–492, 1999  相似文献   

3.
In this study, we investigated the value of a concept map marking guide as an alternative formative assessment tool for science teachers to adopt for the topic of energy. Eight high school science teachers marked students’ concept maps using an itemized holistic marking guide. Their marking was compared with the researchers’ marking and the scores of a multiple-choice diagnostic test. Statistical analysis revealed that teachers evaluated students’ concept maps consistently, but the concept map scores were only mildly correlated with the multiple-choice test scores. We explored what each assessment method revealed in terms of students’ understanding with one student’s performance as a showcase. Teachers’ views on using the marking guide of concept maps as an assessment tool were also included. We discuss the value of the concept map marking guide as a formative assessment tool for science teachers to create and modify in order to encourage students’ conceptual learning.  相似文献   

4.
The purpose of this study is to develop a better understanding of technologies that use natural language as the basis for concept map construction. In particular, this study focuses on the semantic relation (SR) approach to drawing rich and authentic concept maps that reflect students’ internal representations of a problem situation. The following discussions are included: (a) elaborate classifications of concept map approaches that use natural language responses (e.g., student essay); (b) the SR process of eliciting concept maps, established using studies on domain ontology; and (c) a more effective way to identify key concepts and relations from a concept map generated by the SR approach. By comparing the SR approach to other promising concept map technologies that constrain the analytical process in various ways, this study suggests that the SR approach is likely to draw richer and more authentic concept maps. In addition, this study suggests that a certain combination of graph-related metrics be used to filter key concepts from a SR concept map drawn from a written text of 350–400 words. The methods suggested in the study could be used to design an automated assessment technology for complex problem solving and to develop adaptive learning systems.  相似文献   

5.
The Tennessee Value-Added Assessment System (TVAAS) has for several years used the largest longitudinally merged database of student achievement data in the USA. to generate estimates of school system, school, and teacher effects on indicators of student learning in a number of subjects, including reading comprehension. A Learning Information System (LIS) (not to be confused with an Integrated Learning System) is a formative, curriculum based, criterion referenced assessment delivered and scored by computer, which provides detailed feedback in different forms for different stakeholders. The Accelerated Reader (AR) LIS for reading comprehension of real ("trade") books captures the data for each student on the length and difficulty of each book, and the student's percent correct response on the assessment. It aims to help teachers promote and manage effective reading practice. AR data on 62,739 students from grades 2 to 8 in Tennessee schools was merged with the TVAAS teacher effects database, and relationships between these independently obtained measures explored. This illuminated some factors in teacher management of the quality and quantity of student reading practice which could be causative in improving reading comprehension, and the impact of implementation integrity of the LIS.  相似文献   

6.
This yearlong study was implemented in seventh-grade life science classes with the students' regular teacher serving as teacher/researcher. In the study, a method of scoring concept maps was developed to assess knowledge and comprehension levels of science achievement. By linking scoring of concept maps to instructional objectives, scores were based upon the correctness of propositions. High correlations between the concept map scores and unit multiple choice tests provided strong evidence of the content validity of the map scores. Similarly, correlations between map scores and state criterion-referenced and national norm-referenced standardized tests were indicators of high concurrent validity. The approach to concept map scoring in the study represents a distinct departure from traditional methods that focus on characteristics such as hierarchy and branching. A large body of research has demonstrated the utility of such methods in the assessment of higher-level learning outcomes. The results of the study suggest that a concept map might be used in assessing declarative and procedural knowledge, both of which have a place in the science classroom. One important implication of these results is that science curriculum and its corresponding assessment need not be dichotomized into knowledge/comprehension versus higher-order outcomes. © 1998 John Wiley & Sons, Inc. J Res Sci Teach 35: 1103–1127, 1998.  相似文献   

7.
数学学习心理的CPFS结构理论   总被引:15,自引:8,他引:15  
一个数学概念C的所有等价定义的图式,叫做概念C的概念域。一组具有数学抽象关系的概念网络的图式叫做概念系。与一个命题等价的命题集的图式叫做这个命题的命题域。在一个命题集中,任意一个命题都至少与其它某一个命题有“推出”关系,就称这个命题集的图式成为一个命题系。概念域、概念系、命题域、命题系(记为CPFS结构)是对数学认知结构的精确描述,它反应了命题系数学习特有的心理现象和规律。  相似文献   

8.
美国建桥评价方案(Bridging Assessment)是一个适合3-8岁儿童的课堂教学评价体系,它是以活动为基本分析单位,通过任务、儿童、教师三个维度之间构架起的框架结构而展开的儿童学习评价,是一套基于幼儿行为表现与课程理念思想相结合的儿童学习评估工具。文章从美国建桥评价方案的基本理念与内容特色的介绍入手,分析出其对我国幼儿发展与学习评价的若干启示,即以活动为评价单位,观察和描述幼儿的动态发展;关注幼儿的个体差异,实现促进幼儿发展的目的;发挥教师在评价中的中介作用;以评价在课程和教学之间建起桥梁等,这对我国幼儿发展评价具有一定的借鉴和促进作用。  相似文献   

9.
按照面向智能体的程序设计思想,构建基于多智能体的可重构制造模型,把制造企业中各生产管理部门设计成独立的智能体,并借助多智能体系统开发平台JAFMAS来实现系统模型的运行.这一概念的提出,不仅符合制造模式的发展方向,还对多智能体技术的应用推广起到一定的促进作用.  相似文献   

10.
Under a grant from Education Research and Development Committee, researchers at Macquarie University, Sydney, Australia, developed a set of instructional materials aimed at the inservice education of teachers on the topic of student assessment. The Student Assessment Project (SAP) now comprises seven modules in slide‐tape format covering the topics of test design, item writing, analysis of norm‐referenced and criterion‐referenced tests, combining scores from different components, moderation of test results, and grading and reporting. The kit also contains appropriate computer software (for an Apple II microcomputer), manuals and supplementary materials. This article gives some details of the project and its development and describes the widespread use of the first 20 kits from which evaluation data are being sought. Although SAP originally focussed on inservice education of secondary teachers, the present applicability to higher education and the further potential for modification and use at this level is discussed.  相似文献   

11.
We examine the equivalence of two construct‐a‐concept‐map techniques: construct‐a‐map with created linking phrases (C), and construct‐a‐map with selected linking phrases (S). The former places few constraints on the respondent and has been considered the gold standard; the latter is cost and time efficient. Both their products and processes are compared quantitatively and qualitatively as to total accuracy score, individual proposition scores, proposition choice, map structure complexity, proposition generation rate, and proposition generation procedures. We conclude that the two mapping techniques are not equivalent: The C technique is better than the S technique in capturing students' partial knowledge, even though the S can be scored more efficiently than C. Based on their characteristics, if used as an assessment tool, the C technique is more suitable for formative assessment while the S technique is a better fit for large‐scale assessments. © 2005 Wiley Periodicals, Inc. J Res Sci Teach 42: 166–184, 2005  相似文献   

12.
This article examines the impact of a specially designed in-service model on teacher understanding of selected science concepts. The underlying idea of the model is to get teachers to restructure their own understanding of a selected science topic by having them study the structure and evolution of their students' ideas on the same topic. Concepts on topics from the life, earth, and physical sciences served as the content focus and middle school Grades 4–9 served as the context for this study. The in-service experience constituting the main treatment in the study occurred in three distinct phases. In the initial phase, participating teachers interviewed several of their own students to find out what kinds of preconceptions students had about a particular topic. The teachers used concept mapping strategies learned in the in-service to facilitate the interviews. Next the teachers teamed with other teachers with similar topic interests and a science expert to evaluate and explore the scientific merit of the student conceptual frameworks and to develop instructional units, including a summative assessment during a summer workshop. Finally, the student ideas were further evaluated and explored as the teachers taught the topics in their classrooms during the fall term. Concept maps were used to study changes in teacher understanding across the phases of the in-service in a repeated-measures design. Analysis of the maps showed significant growth in the number of valid propositions expressed by teachers between the initial and final mappings in all topic groups. But in half of the groups, this long-term growth was interrupted by a noticeable decline in the number of valid propositions expressed. In addition, analysis of individual teacher maps showed distinctive patterns of initial invalid conceptions being replaced by new invalid conceptions in later mappings. The combination of net growth of valid propositions and the patterns of evolving invalid conceptions is discussed in constructivist terms.  相似文献   

13.
Virtual environment has been widely applied in scientific research and considered as an important tool of exploring science.But constructing a real virtual environment is rather difficult.The difficulty cannot be compared with developing general software,It has a high demand for sofware technology,Obviously traditional methods are not competent for the job.Fortunately with the development of agent-oriented technologies ,all problems seem to be solved.By classifying a virtual environment into four layers corresponding with real world and considering it as a collection of agents,the virtual objects can be mapped into agents and an agent model can be designed.Based on the idea that the state change of a system is caused by that of in dividuals and the mutual effect among them,a theory of agent behavior driven by event and belief is put for ward.Such agent-oriented modeling method can cope with the demand for handling multi-dimension information.It is an effective technique for constructing a large and complex virtual environment.  相似文献   

14.
从Agent理论和库存管理基本内容出发,提出将Agent技术应用于库存管理系统的方法,构建了一个基于多Agent技术的库存管理系统的框架,并给出了其软件实现的思路。  相似文献   

15.
概念图是一种以图表的形式反映概念和概念之间关系的空间网络知识结构图,它能全面地评价学生的知识结构。文章用平均分、茎叶图、命题构建和构图结构四个变量对中美中学生的学科知识结构进行了定量和定性的比较实验研究。实验表明,中美中学生的学科知识结构有显著差异。相对于美国中学生,中国中学生的应试能力强,平均分高,但分数分布不均匀;虽然他们的基础知识扎实,学科知识的掌握及运用较好,但在常识性知识和知识创新上有待提高。  相似文献   

16.
A concept map is a schematic device for representing a set of concept meanings embedded in a framework of propositions. It can be used to evaluate students’ knowledge structure. This article introduces the comparative study of Chinese and American secondary school students’ knowledge structure. They are compared quantitatively and qualitatively in terms of mean score, individual proposition scores, proposition choice and map structure. The results indicate that students’ knowledge structures in the two countries are remarkably different. Compared with American students, Chinese students’ ability to take an exam is stronger and their mean score is higher. However, Chinese students need to improve their general knowledge and creativity although their basic knowledge is solid and they are better in mastering discipline knowledge and knowledge application.  相似文献   

17.
An experiment explicitly introducing learning strategies to a large, first-year undergraduate cell biology course was undertaken to see whether awareness and use of strategies had a measurable impact on student performance. The construction of concept maps was selected as the strategy to be introduced because of an inherent coherence with a course structured by concepts. Data were collected over three different semesters of an introductory cell biology course, all teaching similar course material with the same professor and all evaluated using similar examinations. The first group, used as a control, did not construct concept maps, the second group constructed individual concept maps, and the third group first constructed individual maps then validated their maps in small teams to provide peer feedback about the individual maps. Assessment of the experiment involved student performance on the final exam, anonymous polls of student perceptions, failure rate, and retention of information at the start of the following year. The main conclusion drawn is that concept maps without feedback have no significant effect on student performance, whereas concept maps with feedback produced a measurable increase in student problem-solving performance and a decrease in failure rates.  相似文献   

18.
Task-related variance causes scores from performance assessments not to be generalizable and thus inappropriate for high stakes use. It is possible that task-related variance is due, in part, to students’ inability to transfer their knowledge consistently from one assessment task to another. Therefore, concept-mapping, a cognitive tool, might be useful to aid this transfer. This study examines the effects of concept maps on the task-related variance components of Political Science performance assessments. On three quizzes, some students used concept maps while writing two essays, while other students did not. The task variance components remained unchanged across groups, but the person main effect components increased and the task-by-person interaction components decreased for those using concept maps. Also, the scores from the concept mapping groups had higher generalizability coefficients than for those who did not use a concept map.  相似文献   

19.
Background: Literature contends that a teacher’s knowledge of concept map-based tasks influence how their students perceive the task and execute the creation of acceptable concept maps. Teachers who are skilled concept mappers are able to (1) understand and apply the operational terms to construct a hierarchical/non-hierarchical concept map; (2) identify the legitimacy of the constructed concept map by verifying its graphical structure and its educational utility; and (3) determine the inherent ‘good’ and ‘poor’ qualities of the resulting graphical structure to reiterate the ‘good’ qualities and to coach and provide feedback to alleviate ‘poor’ qualities.

Purpose: The purpose of this study was to investigate the nature of prospective teachers’ knowledge underpinning the technique used to construct concept maps and thus, explicate their facility to construct concept maps.

Sample, Design and Methods: Data consisted of 200 concept maps constructed by prospective teachers in an elementary science methods course.

Results: Analysis revealed that the prospective teachers had predominantly constructed either hierarchical and/or non-hierarchical concept maps. It is likely that their maps reflect the teaching that they themselves would have experienced in their science classrooms during their own education. Additionally, most of these concepts maps only contained the root concept and subordinate concepts and lacked directional linking lines, linking phrases, labelled lines and propositions.

Conclusions: We argue that teacher educators need to assess their prospective teachers’ understanding of concept mapping in relation to the legitimacy (the nature and quality) of the end-products (graphical structures) of such practices. Prospective teachers also need to understand the educational utility of concept mapping in terms of how these end-products impact and/or effectuate learning.  相似文献   

20.
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