Students engaged in problem-based learning (PBL) units solve ill-structured problems in small groups, and then present arguments
in support of their solution. However, middle school students often struggle developing evidence-based arguments (Krajcik
et al., J Learn Sci 7:313–350, 1998). Using a mixed method design, the researchers examined the use of computer-based argumentation scaffolds, called the Connection Log, to help middle school students build evidence-based arguments. Specifically we investigated (a) the impact of computer-based
argumentation scaffolds on middle school students’ construction of evidence-based arguments during a PBL unit, and (b) scaffold
use among members of two small groups purposefully chosen for case studies. Data sources included a test of argument evaluation
ability, persuasive presentation rating scores, informal observations, videotaped class sessions, and retrospective interviews.
Findings included a significant simple main effect on argument evaluation ability among lower-achieving students, and use
of the scaffolds by the small groups to communicate and keep organized. 相似文献
Collaborative inquiry learning affords educators a context within which to support understanding of scientific practices, disciplinary core ideas, and crosscutting concepts. One approach to supporting collaborative science inquiry is through problem-based learning (PBL). However, there are two key challenges in scaffolding collaborative inquiry learning in technology rich environments. First, it is unclear how we might understand the impact of scaffolds that address multiple functions (e.g., to support inquiry and argumentation). Second, scaffolds take different forms, further complicating how to coordinate the forms and functions of scaffolds to support effective collaborative inquiry. To address these issues, we identify two functions that needed to be scaffolded, the PBL inquiry cycle and accountable talk. We then designed predefined hard scaffolds and just-in-time soft scaffolds that target the regulation of collaborative inquiry processes and accountable talk. Drawing on a mixed method approach, we examine how middle school students from a rural school engaged with Crystal Island: EcoJourneys for two weeks (N=45). Findings indicate that hard scaffolds targeting the PBL inquiry process and soft scaffolds that targeted accountable talk fostered engagement in these processes. Although the one-to-one mapping between form and function generated positive results, additional soft scaffolds were also needed for effective engagement in collaborative inquiry and that these soft scaffolds were often contingent on hard scaffolds. Our findings have implications for how we might design the form of scaffolds across multiple functions in game-based learning environments. 相似文献
This case study reports on the implementation of student-generated questioning using a customized personal response system (PRS) by two groups of students in second language (L2) courses at a university in the United States. This study aimed to understand more about instructor and student experience with student-generated questioning for promoting student interaction in the L2 classroom, and sources for investigation included class observation, instructor interview, student survey, and pre/post-test. The results of this study indicated that the classroom interaction could be fostered through student-generated questioning with the support of PRS in L2 courses. In addition, there was a significant difference in students’ achievement between the pre- and post-test. The results are consistent with the findings of previous studies that student-generated questioning fosters collaborative interactions and increases frequency of student engagement. The results also suggest that the adoption of student-generate questioning with a technology support may result in promoting classroom interactions where the students are able to practice the target language through conversation with an instructor and peers. 相似文献
Scaffolding is one of the critical features in a problem-based learning environment to address challenges associated with problem solving. While transfer of responsibility is considered as an ultimate goal in scaffolding that is adaptive and contingent, it is rarely studied and practiced. Thus, the purpose of this study was to inform a deeper understanding of one middle school teacher’s manner of soft scaffolding, which refers to just-in-time and contingent support, through teacher-student interaction to examine how transfer of responsibility was achieved. We investigated one middle school teacher’s forms of scaffolding during a problem of food systems and supply chains related multiple aspects of sustainability and social justice issues. Using conversation analysis, three discursive patterns in scaffolding emerged: (1) shifting patterns of turn-taking organization; (2) leaving room for the students to take responsibility by giving extended wait time; and (3) extending the discussion with different examples. The paper concludes with implications for PBL teachers and researchers.
The Preparing Tomorrow’s Teachers to Use Technology (PT3) initiative has funded various efforts to improve and enhance the technology preparation of preservice teachers. At Arizona State University, these efforts have focused on providing preservice teachers with opportunities to develop, implement, and evaluate their own instructional activities that utilize technology effectively and appropriately in authentic situations, to give them the myriad of tools necessary to integrate technology into teaching and learning activities. This paper focuses on the integration of these efforts into the field-based elementary education program, and discusses our formative evaluation of the field-based technology integration model, through the following questions: What are the preliminary successes of the model with regard to student perceptions, attitudes, and integration of technology into instructional activities? and What components of the model require additions or modifications? 相似文献
Complex problem solving is an effective means to engage students in disciplinary content while also furnishing critical non-cognitive and life skills. Despite increased adoption of complex problem-solving methods in K-12 classrooms today (e.g., case-, project-, or problem-based learning), we know little about how to make these approaches accessible to linguistically and culturally diverse (LCD) students. In this paper, we promote a conceptual framework, based on an ethos of intentionality, that supports culturally responsive teaching (CRT). We provide specific questions to guide teachers’ implementation of an ethos of intentionality, through critical reflection and meaningful action, and discuss a framework for culturally relevant practice that operationalizes key central tenets (e.g., high expectations, cultural competence, and critical consciousness). Finally, we include strategies that can help teachers and designers translate the principles of the CRT framework into action with a specific focus on complex problem solving in classrooms.
The purpose of this study was to develop and field-test the Technology Skills, Beliefs, and Barriers scale and to determine its validity and reliability for use with preservice teachers. Data were collected from 176 preservice teachers enrolled in a field-based teacher education program located at a major Southwestern university in the United States. Results demonstrated that the scale is a valid and reliable measure of teachers' technology skills, beliefs, and barriers and has implications for preservice teacher technology preparation. 相似文献
Problem-based learning (PBL) is an instructional approach in which students in small groups engage in an authentic, ill-structured
problem, and must (1) define, generate and pursue learning issues to understand the problem, (2) develop a possible solution,
(3) provide evidence to support their solution, and (4) present their solution and the evidence that supports it (Barrows,
How to design a problem-based curriculum for the preclinical years. Springer Publishing, New York, 1985). However, research has shown that novice problem-solvers and learners without deep content knowledge have difficulty developing
strong evidence-based arguments (Krajcik et al., J Learn Sci 7:313–350, 1998a; Reiser, J Lear Sci 13(3):273–304, 2004). In this paper, we discuss the components of (e.g., claims and evidence) and processes of making (e.g., define problem and
make claim) evidence-based arguments. Furthermore, we review various scaffolding models designed to help students perform
various tasks associated with creating evidence-based arguments (e.g., link claims to evidence) and present guidelines for
the development of computer-based scaffolds to help middle school students build evidence-based arguments.
Educational technology research and development - The purpose of this study was to examine how students’ academic achievement and group performance related to their perceptions of the... 相似文献
