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1.
《学习科学杂志》2013,22(2):183-226
A form of socially assisted group learning based on a modified version of reciprocal teaching for mathematics (Campione, Brown, & Connell, 1988) was evaluated in terms of its effectiveness in promoting fourth graders' solution of complex 2-step word problems. The emphasis in this method is for an adult tutor to elicit solution suggestions from students and to explore the multiple solutions in seeking group agreement. The method focuses attention both on world representations underlying numbers and on transfer of problem solution planning skills to children over time. The results were compared with those from a modeling-reinforcement tutoring control condition and a classroom activity control in a 10-week study of fourth graders' solution of 4 types of 2-step math word problems, constructed to avoid keywords. Individuals who received either type of training earned higher scores for all problem types than did controls on quizzes; children in the modified reciprocal teaching condition outscored those in the modeling condition on problems that required information to be added from outside the problem and on a quiz of mixed problem types. Subsequent analysis of solutions and videotaped math behaviors suggested that those in the socially assisted learning condition used labeled representations in problem solving more effectively and deduced implied information earlier and more often than those in the modeling condition.  相似文献   

2.
In this study, we investigated the impact of computer spreadsheets on the problem solving practices of students for math story problems, and more specifically on the transition from arithmetic to algebraic reasoning, through the construction of algebraic expressions. We investigated the relationships among the students’ prior knowledge and skills, the verification processes, and the effectiveness of the problem solving tasks. For identifying the factors involved in the problem solving process and their role, in our analysis we employed the Structural Equation Modeling (SEM) approach. We mainly focused on math story problems and on students of tertiary education with little prior experience on the use of computers and spreadsheets. Analysis of the data indicates that spreadsheets can support the transition from arithmetic to algebraic reasoning and this transition is influenced by prior skills of the students relevant to the interaction with the interface (enter formula skills), and the students’ frequency of verification of the solution.  相似文献   

3.
The purpose of this study was to describe the mathematical problem-solving profiles of students with mathematics disabilities (MD) with and without comorbid reading disabilities (RD). The disability status of fourth-grade students was verified through testing (n = 18 MD; n = 22 MD + RD). Then a hierarchy of mathematics problem-solving tasks was administered. The results demonstrated large deficits for both groups; however, the differences between students with MD and those with MD + RD were mediated by the level of problem solving (arithmetic story problems vs. complex story problems vs. real-world problem solving) and by performance dimension (operations vs. problem solving). On arithmetic story problems, the differences between the disability subtypes were similar for operations and problem solving. By contrast, on complex story problems and real-world problem solving, the differences between the subtypes were larger for problem solving than for operations.  相似文献   

4.
Design‐based science (DBS) is a science pedagogy in which new scientific knowledge and problem‐solving skills are constructed in the context of designing artifacts. This paper examines whether the enactment of a DBS unit supported students’ efforts to construct and transfer new science knowledge and ‘designerly’ problem‐solving skills to the solution of a new real‐world design problem in a real‐world setting. One hundred and forty‐nine students participated in the enactment of a DBS unit. Their understanding of the curricular content was assessed by identical pre‐instructional and post‐instructional written tests. They were then given a new design problem as a transfer task. There was a statistically significant increase on scores from pre‐test to post‐test with an effect size of 1.8. There was a stronger correlation between the scores of the transfer task and those of the post‐test than with those of the pre‐test; we use this finding to suggest that the knowledge that was constructed during the unit enactment supported the solution of the transfer task. This has implications for the development of science curricula that aim to lead to the construction of knowledge and skills that may be useful in extra‐classroom settings. Whether participation in consecutive enactments of different DBS units increases transfer remains to be investigated in more depth.  相似文献   

5.
This study describes and contrasts theoretically and empirically problem solving of situated problems in school and the real world at the macro level as a social-cultural activity system and analyzes the process of solving situated problems by high school students at the micro level as an activity. Three potentially experiential problem tasks were given to 31 last year high School science students. Action map, a concept derived from activity theory, was used to represent the solutions. Qualitative methods were used to analyze the data obtained from the written solutions as well as interviews with the participants. Leont'ev's activity theory and Engeström's activity system were used as frameworks to analyze and interpret the data. The results indicate that there are fundamental identifiable differences among the activities and the activity systems of problem solving in the real world, situated, and school contexts.  相似文献   

6.
This study compared the effects of worked example and problem‐solving approaches in individual or group work settings on learning to solve geometry problems. One hundred and one seventh graders from Indonesia were randomly allocated to four experimental groups using a 2 (problem‐solving vs. worked examples) × 2 (individual vs. group study) design. Performance measures on numeric and reasoning abilities using both similar and transfer tasks were collected. The results indicated a significant superiority of the worked example approach in both the individual and group work settings. Supporting data revealed that students could understand the material more easily using worked examples than when solving problems. The experiment provided evidence that the advantage of using worked examples over solving problems extends to a group work context.  相似文献   

7.
Requirements for reasoning, explaining, and generalizing mathematical concepts increase as students advance through the educational system; hence, improving overall mathematical proficiency is critical. Mathematical proficiency requires students to interpret quantities and their corresponding relationships during problem‐solving tasks as well as generalizing to different contexts; both requirements are particularly challenging for many students with learning disabilities. An in‐depth review of research was completed to (1) demonstrate how interventions targeting mathematical problem solving are categorized into heuristic, semantic, or authentic approaches; (2) explore the degree to which generalization is presented in each approach; and (3) determine the efficacy of each intervention approach. Experimental studies (n = 17) demonstrating the effects of interventions designed to enhance mathematical problem solving for secondary students with or at risk of learning disabilities were analyzed. Findings indicate that the efficacy of the three intervention approaches varies, and that the real‐world connections differ. Implications for research and practice are discussed.  相似文献   

8.
The purpose of this study was to examine the effects of actively categorizing math problems on the math problem solving performance of students with and without attention deficit disorder (ADD). To this purpose, 52 fifth and sixth grade students were involved in actively categorizing or noncategorizing (control) tasks followed by two problem solving activities. The results of this study indicated that students more frequently organize math problems by categories based on deeper structures (i.e., concepts or operations) when they were informed of the features to look for than students who organized math problems on their own. However, those students who actively organized the math problems and formed categories on their own had higher accuracy in an assessment of generality in a subsequent problem solving task than students who were earlier given categories. These effects were similar for both groups and provided generality to prior research on recall performance to assessing problem solving.  相似文献   

9.
Online courses have been criticized for their focus on knowledge acquisition rather than on how to solve authentic complex problems, a skill that is increasingly being recognized as critical to meeting the challenges in the real world. The purpose of this study was to explore whether between‐group collaboration in project‐based online courses can promote student learning of complex problem solving. Eleven graduate students in an educational technology class participated in this study. Each group of three to four members designed and developed a 2‐week online mini‐course that was later implemented with classmates across groups. During the semester, students were encouraged to visit other group areas, discuss challenges, and share strategies in the online course environment. The results indicate that between‐group collaboration was effective in improving group processes, group project performance, individual student achievement, and confidence in complex problem solving in designing online courses.  相似文献   

10.
The article reports on a small‐scale short story writing project. It details the development of the project and shares the emerging findings. The aim of the project was to enhance the quality of students' writing while developing teachers' practice in the teaching of short story writing. The project team comprised the author and four secondary teachers of English. The approach to story writing outlined here was influenced by the example of gaming, where players immerse themselves in a secondary world, confront situations which demand problem‐solving skills, progress through a number of stages, and find satisfaction in completing the game. The project explored the link between talking and thinking and the value given to putting forward tentative ideas, raising questions and solving problems in a collective manner, in a whole‐class teaching situation. The teachers used guided classroom talk to explore each stage in the composition of a story. They challenged students into better ways of thinking or more elaborate forms of explanation. The teachers asked ‘what if’ questions to open up possibilities for the young writers. The teachers also had to judge when best to seize the moment and move the students towards writing. A key issue for the project was to explore the extent to which the structured approach helped to liberate the imagination of the students and improve the quality of their writing.  相似文献   

11.
上海市中小学研究型课程是上海二期课程教材改革,为重点培养学生的创新精神与实践能力而专门设置的一类课程。课程面向真实生活世界,关注学生兴趣,基于问题解决,倡导自主探究、实践体验和合作交流的学习方式。让学生在对各种现象的观察、发现问题和解决问题的过程中,展现和增强自己的创新精神和实践能力。为学生的发展与成长创造有意义的学习经历。  相似文献   

12.
One of the fundamental aims of education is the integration of theory and practice. The case method is a teaching strategy in which students must apply their knowledge to solve real‐life situations. They have to analyze the case described and propose the best possible solution. Although the case may be written, the use of new information and communication technologies can develop the case plan in ways that would achieve greater realism and widen the possibilities for discussion. This paper describes our experience in implementing the case method to teach food safety in the Chair of Hygiene. At first this methodology was used to improve the teaching of good practices in food preparation, later practical work was implemented where small groups of students designed and carried out the microbiological analysis of suspected food. This practical work was presented online as a multimedia activity; students were given face‐to‐face and on‐line tutoring. Evaluation was based both on students’ performance and on a survey they had to answer. More than 92% of students regarded the methodology used for the understanding of the unit as sound. Professors collaboration on providing guidance and multimedia presentation were also positively assessed. The bringing together of face‐to‐face and virtual tasks and small‐group discussion of cases under professors guidance contributed to making good use of the positive aspects of this methodology in order to improve the understanding of problems which do not always have a single answer.  相似文献   

13.
The aim of the present study was to investigate those factors influencing performance in solving story problems in a web-based environment. A situational simulation, “Hiking across Estonia,” was explored by two samples of voluntary groups of students, comprising 65 and 50 groups, respectively. They solved 25 ecological and environmental story problems and filled in a pre-test and post-test that evaluated problem-solving skills. The groups were clustered according to their characteristics and performance into five clusters: “slow learners,”“quick learners,”“successful learners,”“smart learners,” and “ineffective learners.” The clusters were provided with different types of supportive notes and the sequence of problems was rearranged according to the students' initial results in the first four problem-solving tasks. These treatments demonstrated statistically significant improvements in the outcome in solving story problems in small groups. The main factors determining the effectiveness of problem solving were: (i) time spent on learning; (ii) initial skills in problem-solving; (iii) the presence of support in enhancing situation awareness; (iv) graduated problem tasks sequenced on the basis of complexity and difficulty; (v) ratio of genders in a learning group. However, the importance of these factors depended on the cluster and, therefore, it can be concluded that the design of problem-solving instruction has to be adapted according to the clusters' characteristics.  相似文献   

14.
This study investigated the effect of instruction with a cognitive tutoring software system in a remedial algebra course. The performance on algebra tasks of students who attended the experimental (cognitive tutor) and a control class was compared. The results indicated that the two groups of students were equally proficient with respect to algebraic manipulation skills. However, students who attended the experimental algebra section performed significantly better in problem solving than students in the control section. This finding suggested that the use of the cognitive tutor (a) improved students' problem‐solving abilities; (b) fostered student development of richer concepts of variable and function; and (c) improved students' procedural abilities in approaching and carrying through mathematical analyses of relatively complex situations.  相似文献   

15.
Abstract

In this study we describe and examine the effectiveness of an instructional program designed to teach learning disabled adolescents to make better personal decisions. We presented problems in short narratives based on the types of problems these students must solve in their own lives. The program, conducted as part of the students' regular resource room curriculum, incorporated schema‐general questions for problem solving coupled with practice in generating problem‐specific questions to reach an appropriate decision. Participants were 70 resource room students in two large, urban high schools. We employed a pretest‐posttest comparison group design. On the posttest, instructed students performed significantly better on (1) identifying a general schema for making a personal decision and (2) applying the schema to reach appropriate decisions concerning novel problem narratives. The results support the view that application of a general schema to specific problems can be an effective instructional method to improve critical thinking and decision making.  相似文献   

16.
应用型本科程序设计课程教学中存在很多问题,如教师批改作业耗时耗力、教学内容太过重视语法、学生失去兴趣、编程调试能力几乎为零等．针对这些问题,结合学生的实际接受能力和培养目标,在教学内容、教学方法、教学手段、考核方式等教学各环节进行了改革．实例教学方式重在培养计算思维,在线评测系统作为练习和考试的平台激发学生兴趣、减轻教师负担,项目的完成．培养学生团结协作和解决问题的能力、导师制可以实现课后问题的解决等．在培养计算机应用能力的过程中,学生的计算思维、团队合作和实践能力有了显著的提高．  相似文献   

17.
The term intensive scaffolding refers to any set of conceptual scaffolding strategies that always allow the user to find the solution to a problem. Despite the many benefits of scaffolding, some negative effects have also been reported. These are mainly related to the possibility that a student solves the problems without actually engaging in their content. In this paper, we have used an intelligent tutoring system (ITS) to analyze the effect that intensive scaffolding has on the learning of algebraic word problem solving (AWPS). Two different versions of the ITS, which differ in the amount of scaffolding that they provide, have been created. These two versions were used by two groups of students in Secondary Education, in a quasi‐experimental study. The comparison of pre‐ and posttest scores shows a significant increase of the competence in AWPS in the group that used the ITS with intensive scaffolding.  相似文献   

18.
Recently, the importance of ill‐structured problem‐solving in real‐world contexts has become a focus of educational research. Particularly, the hypothesis‐development process has been examined as one of the keys to developing a high‐quality solution in a problem context. The authors of this study examined predictive relations between young adolescents' metacognition, prior domain knowledge, and hypothesis‐development performance in a computer‐supported environment. Data were collected from 11‐ and 12‐year‐old Korean students (N = 101). A hypothesised model in predicting hypothesis‐development performance was evaluated using structural equation modelling. Both metacognition and prior domain knowledge significantly predicted young adolescents' hypothesis‐development performance. Implications and limitations of the present study and issues, including the experimental design, are discussed.  相似文献   

19.
College students often experience difficulties in solving physics problems. These difficulties largely result from a lack of conceptual understanding of the topic. The processes of conceptual learning reflect the nature of the causal reasoning process. Two major causal reasoning methods are the covariational and the mechanism‐based approaches. This study was to investigate the effects of different causal reasoning methods on facilitating students’ conceptual understanding of physics. 125 college students from an introduction physics class were assigned into covariational group, mechanism‐based group, and control group. The results show that the mechanism‐based group significantly outperformed the other two groups in solving conceptual problems. However, no significant difference was found in all three groups performance on solving computational problems. Speculation on the inconsistent performance of the mechanism‐based group in conceptual and computational problem solving is given. Detailed analyses of the results, findings, and educational implications are discussed  相似文献   

20.
Recently, there has been increasing criticism concerning academic computer science education. This paper presents a new approach based on the principles of constructivist learning design as well as the ideas of knowledge transfer in communities of practice. The course ‘High‐tech Entrepreneurship and New Media’ was introduced as an interdisciplinary project management lab in which students collaborate in groups to develop software solutions for authentic problems. Main goals were the tighter integration of university and local start‐up companies, an intense knowledge transfer on software engineering methods, as well as the implementation of constructivist learning principles in academic teaching. This paper presents the background and structure of the course as well as the results of a formative evaluation. While being successful in introducing a course based on digital‐media assisted, constructivist learning arrangements, establishing lasting communities of practice between university and industry is still an open issue. After discussing several reasons, the paper concludes with a list of general recommendations on how to improve the approach and its implementation.  相似文献   

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