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1.
Eleni A. Kyza Costas P. Constantinou George Spanoudis 《International Journal of Science Education》2013,35(18):2489-2525
We report on a study investigating the relationship between cognitive ability grouping, reflective inquiry scaffolding, and students’ collaborative explanations of an ecosystem disturbance which took place when a number of flamingo birds died in a salt lake because of nearby intensive human activities. Twenty-six pairs of students from two intact sixth-grade classes participated in the study. All students investigated scientific data relating to the ecosystem problem using a web-based learning environment. One class was provided with web-based reflective inquiry scaffolding (WorkSpace), while the other class used PowerPoint. The main data analyzed for this study consisted of each pair’s written explanation and task-related artifacts. Findings show that the web-based reflective scaffolding supported students in providing valid evidence in support of their explanations. The analyses of the students’ collaborative explanations showed no statistically significant differences that could be attributed to prior achievement between students in the WorkSpace condition, while differences were found between the different cognitive ability pairs in the PowerPoint class. These findings suggest that the WorkSpace scaffolding may have provided more influential support to lower cognitive ability pairs in creating evidence-based explanations. 相似文献
2.
This study examined how mothers' scaffolding predicts preschoolers' metacognitive strategies and task performance. N = 132 preschoolers and their mothers participated in the study. Problem-solving tasks were solved in mother-child interactions and independently. Mothers' scaffolding (means; cognitive, metacognitive, autonomy support) and mother-child task performance were coded during mother-child interactions. Children's metacognitive strategies and task performance were coded during child-alone problem-solving. Path-model analyses found that mothers' metacognitive support was negatively – and autonomy support positively – associated with mother-child task performance. Mothers' scaffolding means served different scaffolding intentions, building two scaffolding strategies: (1) Mothers using more scaffolding means provided more cognitive support, which was related to lower levels of children's metacognitive strategies. (2) Mothers using fewer scaffolding means provided more autonomy support, which was related to higher levels of children's metacognitive strategies. This study demonstrates the importance of examining scaffolding strategies and shows that different scaffolding strategies may be relevant in joint and child-alone problem-solving. 相似文献
3.
Roger Azevedo Jennifer G. Cromley Fielding I. Winters Daniel C. Moos Jeffrey A. Greene 《Instructional Science》2005,33(5-6):381-412
This study examines the effectiveness of three scaffolding conditions on adolescents’ learning about the circulatory system
with a hypermedia learning environment. One hundred and eleven adolescents (n = 111) were randomly assigned to one of three scaffolding conditions (adaptive scaffolding (AS), fixed scaffolding (FS),
or no scaffolding (NS)) and were trained to use a hypermedia environment to learn about the circulatory system. Pretest and
posttest data were collected to measure the qualitative changes in students’ mental models of the topic and quantitative changes
in their declarative knowledge. Verbal protocols were collected during the 40-minute learning task to examine how each condition
affected the way in which students regulated their learning. Findings revealed that learners in both the AS and NS conditions
gained significantly more declarative knowledge than did those in the FS condition. Also, the AS condition was associated
with shift in learners’ mental models significantly more than the other conditions. Associated with these significant shifts
in their mental models, learners in the AS condition regulated their learning by planning and activating prior knowledge,
monitoring their cognitive activities and their progress toward learning goals, using several effective strategies, and engaging
in adaptive help-seeking. By contrast, those in the NS condition used fewer effective strategies, while those in the FS regulated
their learning by using several regulatory processes which seemed to impede their learning. Implications for the design of
scaffolds for fostering students’ self-regulated learning with hypermedia are presented. 相似文献
4.
This study investigates the mechanisms of scaffolding in a synchronous network-based environment – the ‘collaborative virtual
workplace’. A theoretical ‘multi-actor’ scaffolding model was formulated. The study itself focused on the role and inter-relations
of verbal scaffolding by tutor and peers during a collaborative process of making decisions about environmental issues. The analysis drew on data from the decision-making
discussions of 31 groups – material that was saved automatically by the learning environment software. The age of the 62 students
ranged from 14 to 17. Discourse act categories were devised to describe the tutor’s and the students’ task-related, supportive
and social communicative acts. The scaffolding situation was characterized through a causal discourse act interaction approach.
Tutor and students appeared to be elaborating and replacing each other’s process scaffolding acts in the collaborative decision-making
situation. The influence of certain tutor’s and students’ inter-related scaffolding patterns on students’ decision-making
provided empirical support for the ‘multi-actor’ scaffolding model.
in final form: 12 May 2005 相似文献
5.
This study explores how collaborative inquiry learning can be supported with multiple scaffolding agents in a real-life field trip context. In practice, a mobile peer-to-peer messaging tool provided meta-cognitive and procedural support, while tutors and a nature guide provided more dynamic scaffolding in order to support argumentative discussions between groups of students during the co-creation of knowledge claims. The aim of the analysis was to identify and compare top- and low-performing dyads/triads in order to reveal the differences regarding their co-construction of arguments while creating knowledge claims. Although the results revealed several shortcomings in the types of argumentation, it could be established that differences between the top performers and low performers were statistically significant in terms of social modes of argumentation, the use of warrants in the mobile tool and in overall participation. In general, the use of the mobile tool likely promoted important interaction during inquiry learning, but led to superficial epistemological quality in the knowledge claim messages. 相似文献
6.
The Impact of Scaffolding and Student Achievement Levels in a Problem-based Learning Environment 总被引：1，自引：0，他引：1
This study examined how scaffolds and student achievement levels influence inquiry and performance in a problem-based learning
environment. The scaffolds were embedded within a hypermedia program that placed students at the center of a problem in which
they were trying to become the youngest person to fly around the world in a balloon. One-hundred and eleven seventh grade
students enrolled in a science and technology course worked in collaborative groups for a duration of 3 weeks to complete
a project that included designing a balloon and a travel plan. Student groups used one of three problem-based, hypermedia
programs: (1) a no scaffolding condition that did not provide access to scaffolds, (2) a scaffolding optional condition that
provided access to scaffolds, but gave students the choice of whether or not to use them, and (3) a scaffolding required condition
required students to complete all available scaffolds. Results revealed that students in the scaffolding optional and scaffolding
required conditions performed significantly better than students in the no scaffolding condition on one of the two components
of the group project. Results also showed that student achievement levels were significantly related to individual posttest
scores; higher-achieving students scored better on the posttest than lower-achieving students. In addition, analyses of group
notebooks confirmed qualitative differences between students in the various conditions. Specifically, those in the scaffolding
required condition produced more highly organized project notebooks containing a higher percentage of entries directly relevant
to the problem. These findings suggest that scaffolds may enhance inquiry and performance, especially when students are required
to access and use them. 相似文献
7.
Hsin-Yi Chang 《Interactive Learning Environments》2017,25(8):1083-1097
Two investigations were conducted in this study. In the first experiment, the effects of two types of interactivity with a computer simulation were compared: experimentation versus observation interactivity. Experimentation interactivity allows students to use simulations to conduct virtual experiments, whereas observation interactivity allows students to observe segmented video clips of the simulation at their own pace and sequence. In the second experiment, the effects of two types of scaffolding for experimentation interactivity were compared: the driving question versus structured prompt scaffolding. A total of 128 eighth-grade students were involved. The learning outcomes examined include the students’ understanding of the concepts in the simulation, their learning time, total numbers of virtual experiments conducted or observed, and learning efficiency. All four designs resulted in comparable learning gains for the students. The driving question scaffolding resulted in better learning efficiency, whereas the structured prompt scaffolding supported students in conducting more virtual experiments. 相似文献
8.
Marina Martins 《International Journal of Science Education》2019,41(6):713-738
The aims of this paper are twofold. First, we present, justify, and characterise an instrument for analysing students’ argumentative reasoning developed from Walton’s ideas. Then, from the analysis of students’ argumentative discussion about a socio-scientific controversy, we identify the advantages and disadvantages of using the instrument. The results show that the analysis of students’ argumentative reasoning require nine stages, which have logical and pragmatic criteria that should be used in order to decrease the subjectivity of the analysis. The analysis sheds light on the characterisation of students’ argumentative reasoning by supporting the understanding of the move of students’ argumentative clusters, since it enables us to understand that: the argumentative quality depends on the relations between arguments and other statements; and an argumentative cluster can be developed according to the frequency of refutations or attacks by means of questions involving its constituents. This is because when arguments, questions, and/or claims are evaluated, the individuals have the possibility of bringing other reasons and/or arguments that support them in the discussion. Therefore, the main contribution of this study is the development of an instrument, based on dialectical principles, that contributes to analyse students’ argumentative discuss and to support discussions of their argumentative quality. 相似文献
9.
教育游戏的研究者发现,教育游戏中添加教学策略或学习支架能够帮助学生建立游戏和学科知识之间的联系,可以有效发挥游戏的教育价值,提高学生的学习效果和学习体验。本研究在梳理学习支架理论的基础上,针对"The Tiny Bang Story"游戏设计了两种不同强度的任务支架,以研究强度不同的任务支架对不同认知风格学生的学习动机和沉浸感的影响。研究发现:任务强度不同的学习支架对不同认知风格学生的学习动机和沉浸感的影响存在显著差异;场依存型学生的学习动机和沉浸感会随任务支架强度的增加而提升;场独立型学生的学习动机随任务支架强度的增加没有显著性变化,反而沉浸感会随任务支架强度的增加呈现先升后降的正三角趋势。 相似文献
10.
Elizabeth Hewitt 《Education 3-13》2013,41(4):402-418
Group talk opportunities in science can be a rich site for conceptual change. The role of the teacher is vital in scaffolding the exploratory talk which can lead children to talk their way to new understandings and clarify their ideas with peers. This study aims to uncover teacher strategies which lead to effective talk for developing scientific understanding. The findings of this small-scale ethnographic case study suggest that the temporal organisation, the way in which the teacher organises the timing of group discussion activities, may have an impact upon the nature of the pupils’ dialogue. 相似文献
11.
Johanna Lönngren Tom Adawi Magdalena Svanström 《European Journal of Engineering Education》2019,44(1-2):196-221
ABSTRACTIn recent years, there has been increasing interest within the engineering education research community to prepare engineering students to address wicked problems (WPs) such as climate change, resource scarcity and violent conflict. Previous research suggests that engineering students are able to address WPs if they are given adequate support, but there is a lack of research on what kinds of support are needed. This paper aims to reduce this gap by reporting on students’ performance in, and approaches to, addressing WPs when different scaffolding strategies were used in different parts of a rubric-based intervention. The intervention aimed to provide undergraduate engineering students with an understanding of the nature of WPs and with a structured way of addressing them. For each part of the intervention, we discuss affordances for learning provided by the different scaffolding strategies. The results suggest that strong cognitive scaffolding can support students’ understanding of the nature of WPs and students’ performance in written responses to WPs, but possibly also limits deep engagement with WPs and transfer of learning to other contexts. 相似文献
12.
Michal Ayalon Ruhama Even 《International Journal of Science and Mathematics Education》2016,14(3):575-601
This study examines how students’ opportunities to engage in argumentative activity are shaped by the teacher, the class, and the mathematical topic. It compares the argumentative activity between two classes taught by the same teacher using the same textbook and across two beginning algebra topics—investigating algebraic expressions and equivalence of algebraic expressions. The study comprises two case studies in which each teacher taught two 7th grade classes. Analysis of classroom videotapes revealed that the opportunities to engage in argumentative activity with the topic investigating algebraic expressions were similar in each teacher's two classes. By contrast, substantial differences were found between one teacher's classes with regard to the opportunities to engage in argumentative activity with the topic equivalence of algebraic expressions. The discussion highlights how the interplay between the characteristics of the mathematical topic, the characteristics of the class, and the characteristics of the teacher contributed to the shaping of students’ opportunities to engage in argumentative activity. 相似文献
13.
The purpose of this study was to investigate the various roles that early elementary teachers adopt when questioning, to scaffold dialogic interaction and students’ cognitive responses for argumentative practices over time. Teacher questioning is a pivotal contributing factor that shapes the role teachers play in promoting dialogic interaction in argumentative practice and that different roles serve different functions for promoting students’ conceptual understanding. The multiple-case study was designed as a follow-up study after a 4-year professional development program that emphasized an argument-based inquiry approach. Data sources included 30 lessons focusing on whole class discussion from three early elementary teachers’ classes. Data were analyzed through two approaches: (1) constant comparative method and (2) enumerative approach. This study conceptualized four critical roles of teacher questioning—dispenser, moderator, coach, and participant—in light of the ownership of ideas and activities. The findings revealed two salient changes in teachers’ use of questions and the relationships between teachers’ question-asking and students’ cognitive responses: (1) teachers increasingly used multiple roles in establishing argumentative discourse as they persistently implemented an argument-based inquiry approach, and (2) as teachers used multiple roles in establishing patterns of questioning and framing classroom interactions, higher levels of student cognitive responses were promoted. This study suggests that an essential component of teacher professional development should include the study of the various roles that teachers can play when questioning for establishing dialogic interaction in argumentation and that this development should consist of ongoing training with systematic support. 相似文献
14.
Suhkyung Shin 《Interactive Learning Environments》2016,24(8):2032-2047
This study investigates how scaffolding type and learners’ epistemological beliefs influence ill-structured problem solving. The independent variables in this study include the type of scaffolding (task-supported, self-monitoring) and the student's epistemological belief level (more advanced, less advanced). The dependent variables include three components of problem-solving skill (problem representation, solution development, monitoring and evaluation). The two-way multivariate analysis of variance results reveal that students in the self-monitoring scaffolding group earned higher scores on problem representation and solution development than those in the task-supported scaffolding group. Students with more advanced epistemological beliefs also earned higher scores on solution development and monitoring and evaluation than did those with less advanced epistemological beliefs. In addition, a significant interaction was found between scaffolding type and epistemological belief level. These findings suggest that students can benefit from self-monitoring scaffolding in web-based problem solving and that different types of scaffolding should be provided according to the student's epistemological belief level. 相似文献
15.
ABSTRACTThe current study focused on scaffolding programmes, including cognitive and meta-cognitive components, for science problem solving in a computerised learning environment to identify their unique effects on aspects of student motivation. Using expectancy-value theory as a conceptual framework, the current study focused on two motivational aspects: intrinsic value and perceived cost. Four scaffolding components were identified (structural, reflective, subject matter and enrichment) and used in different configurations to construct four scaffolding programmes ranging from low support (Enrichment) to partial support (Operative and Strategic) to full support (Integrated). The participants were seventh-grade students (N?=?458) sampled from 15 different classes in 3 middle schools. The classes were randomly assigned to the five treatment groups (four ‘scaffolding programmes’ and one control). The intervention was conducted over approximately 6 months as part of the regular class curriculum. The first phase of the study was based on self-report surveys distributed twice to all participants, and the second phase was based on observations of a sub-sample (N?=?145). The findings indicated that the integrated group demonstrated the most adaptive patterns of motivation. Specifically, the integrated group was the only group that showed no decline in intrinsic value or increases in perceived cost. Both the strategic and integrated groups had higher levels of observed willingness to invest effort and reports of intentional learning when using the scaffolding software. The common feature of these groups is the reflection component, which implies that reflection and its combination with subject matter have positive effects on motivation. 相似文献
16.
Student interaction in school contexts is a topic that has been researched from many different perspectives. However, the role of students as tutors scaffolding other peers is not normally addressed, since studies are usually focused on the teacher. Moreover, considering the many technologies that can support students’ work nowadays, studies describing specific practices are still needed in order to understand the many possibilities and constraints that can emerge from the use of these tools in the field of education. This exploratory case study aims to extend research on scaffolding between students, presenting data from an ethnographic study where a commercial video game was introduced as part of the curricular activities. Analytically, the scaffolding metaphor is the departing point to describe in detail how the scaffolding process took place, focusing on its purposes and on the role of students as tutors. Our findings reveal how students offered mostly procedural scaffoldings, performing tutor functions such as highlighting relevant features, reducing levels of freedom or controlling the frustration. Results highlight that students can perform scaffolds, and this should be considered as part of the classroom design, making this process visible. Moreover, specific features of the video game enhanced these interactions, which should also be considered when designing game learning environments in the future. 相似文献
17.
岳铁艳 《临沂师范学院学报》2014,(6):113-115
目标语交际中,教师要用自己的语言组织课堂教学,指导交际者真正地学好和应用好目标语。因此,教师的话语功能在帮助交际者提高交际能力方面发挥了重要作用。这种功能性帮助被理解为"支架"。根据对课堂交际语的分析,可以总结出反馈型话语支架、示范型话语支架、任务型话语支架、情感型话语支架、修正型话语支架这五种功能性支架,这些教师话语支架可以帮助交际者树立交际的信心,发展独立解决问题的能力,提升认知能力。 相似文献
18.
Creating Teachable Moments... and Making Them Last 总被引：1，自引：0，他引：1
Edmund J. Hansen 《Innovative Higher Education》1998,23(1):7-26
The article investigates what the content (rather than the process) of instruction can do to motivate oftentimes ill-prepared students with predominantly extrinsic interests in their education. Among the four content-related conditions of classroom learning that are described, particular emphasis is placed on the relationship between teaching for cognitive dissonance and reflective self-assessment. The former is seen as a main condition for creating teachable moments, the latter as a vehicle for turning them into lasting learning experiences. The discussion of these issues is based on work done in three specific courses and on additional evidence from the literature. 相似文献
19.
探讨了脚手架搭设对于建筑施工的重要性,在提出脚手架搭设施工技术要点的基础上,结合工程实例介绍了深圳市南光高速公路单箱单室大跨度变截面现浇箱梁脚手架搭设的思路和方法,工程实践验证了所设计的支架结构形式是合理可行的,保证了工程顺利的完工,为类似施工提供了技术参考和相应借鉴. 相似文献
20.
Shu-Chiu Liu 《International Journal of Science Education》2019,41(8):1038-1051
Futures thinking, or foresight, is increasingly recognised as a key element in science and environmental education. We integrated a futures thinking activity into an undergraduate general science course in Taiwan by using an online thinking and discussion tool that provides scaffolding questions to help students think systematically about future possibilities of the specific topic – genetically modified (GM) food. As a course assignment, the enrolled students were asked to work on and write their responses to this online scaffolding tool over five weeks. The purpose of this study was to examine students’ expressions of futures thinking on GM food as elicited through this assignment. We content analysed the written responses of 99 students who completed the online task. A particular emphasis of analysis was placed on examining students’ thoughts and ideas about ‘preferable’ or ‘desirable’ futures of GM food. Nine themes emerged from the analysis and were found be organised into three categories using factor analysis. These results provided insight into characteristics of students’ futures thinking and underlying perspectives, and can serve as a basis for future-focused curricular and instructional innovations. 相似文献