Computer-based Scaffolds Research Articles

Providing guidance in virtual lab experimentation: the case of an experiment design tool

The present study employed a quasi-experimental design to assess a computer-based tool, which was intended to scaffold the task of designing experiments when using a virtual lab for the process of experimentation. In particular, we assessed the impact of this tool on primary school students’ cognitive processes and inquiry skills before and after the study’s treatment, using pre- and post-tests. Our research design involved a group of students who used the computer-based tool/scaffold to design the study’s experiments (experimental condition) and a group of students who used a paper-and-pencil worksheet as a scaffold to design the same experiments (control condition). The primary finding of the study was that the use of the computer-based experiment design tool had a more positive effect on students’ inquiry skills related to identifying variables and designing investigations than the paper-and-pencil one. This might be attributed to the functionalities provided only by the computer-based experiment design tool, which enabled students to focus their attention on crucial aspects of the task of designing experiments through (1) maintaining values for constant variables when planning experimental trials and (2) the provision of instant feedback when classifying variables into independent, dependent and controlled variables. Moreover, students in the two conditions displayed differing patterns of interactions among cognitive process and inquiry skills. Implications for designing and assessing similar computer-based scaffolds are discussed.

An Examination of Credit Recovery Students’ Use of Computer-Based Scaffolding in a Problem-Based, Scientific Inquiry Unit

In this study, we investigated how high school credit recovery students worked in small groups and used computer-based scaffolds to conduct scientific inquiry in a problem-based learning unit centered on water quality. We examined how students searched for and evaluated information from different sources, and used evidence to support their claims. Data sources included screen recordings, interviews, scaffold trace data, and scaffold entry quality ratings. Findings indicate that many students struggled to use the scaffolding and did not fully respond to scaffold prompts. Collaboration within small groups was often inhibited by frequent absences, struggles using the scaffolding, desires to complete tasks quickly rather than thoroughly, and an expectation that the group leader address the questions. However, many groups followed the scientific inquiry process prompted by the scaffolding, and support for collaboration within the scaffolds led students to negotiate the meaning of water quality data, and this in turn led students to see water quality as a complex, rather than a binary, construct.

Toward a framework on how affordances and motives can drive different uses of scaffolds: theory, evidence, and design implications

One way to help students engage in higher-order thinking is through scaffolding, which can be defined as support that allows students to participate meaningfully in and gain skill at a task that is beyond their unassisted abilities. Most research on computer-based scaffolds assesses the average impact of the tools on learning outcomes. This is problematic in that it assumes that computer-based scaffolds impact different students in the same way. In this conceptual paper, we use activity theory and the theory of affordances to build an initial theoretical framework on how and why K-12 students use computer-based scaffolds. Specifically, we argue that affordances and motives drive how and why K-12 students use computer-based scaffolds. Then we examine empirical studies to gather preliminary support for the framework. Implications for research on and the design of computer-based scaffolds are explored.

A Framework for Designing Scaffolds That Improve Motivation and Cognition

A problematic, yet common, assumption among educational researchers is that when teachers provide authentic, problem-based experiences, students will automatically be engaged. Evidence indicates that this is often not the case. In this article, we discuss (a) problems with ignoring motivation in the design of learning environments, (b) problem-based learning and scaffolding as one way to help, (c) how scaffolding has strayed from what was originally equal parts motivational and cognitive support, and (d) a conceptual framework for the design of scaffolds that can enhance motivation as well as cognitive outcomes. We propose guidelines for the design of computer-based scaffolds to promote motivation and engagement while students are solving authentic problems. Remaining questions and suggestions for future research are then discussed.

Portraits of middle school students constructing evidence-based arguments during problem-based learning: the impact of computer-based scaffolds

A critical step in problem-based learning (PBL) units occurs when groups present their solution to the central problem. This is challenging for middle school students because it involves the creation of an evidence-based argument (Krajcik et al., Journal of the Learning Sciences 7:313–350, 1998). Using a mixed method design, this study investigated (a) the impact of computer-based argumentation scaffolds on middle school students’ argumentation ability, and (b) what middle school students used for support and why during a PBL unit. Data sources included persuasive presentation rating scores, argument evaluation ability test, videotaped class sessions, and prompted interviews. Results included a significant impact on average-achieving students’ argument evaluation ability, and use of the scaffolds by the small groups to plan their research and keep organized.

Examining the effects of computer-based scaffolds on novice teachers’ reflective journal writing

This study employed an explanatory mixed methods design to examine the effects of two computer-based scaffolds on novice teachers' reflective journal writing. The context for the study was an attempt to refine the reflective writing component of a large scale electronic portfolio system. Quantitative results indicated that the computer-based scaffolds significantly enhanced the participants' reflective journal writing as well as the length of their written artifacts. Moreover, correlation analysis revealed that there was a positive relationship between the highest level of reflection and the length of journal writing. Three factors gleaned from qualitative data helped explain how and why the scaffolds enhanced participants' reflective thinking, including (a) the specific requirements conveyed in the scaffolds; (b) the structure of the scaffolds; and (c) the use of the critical incidents to anchor reflective journal writing. It is hoped that the analyses and results of the current study can help inform others on how to leverage the affordances of computer-based scaffolds to augment reflective practice in technology-enhanced educational systems.

A scaffolding framework to support the construction of evidence-based arguments among middle school students

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.

Scaffolding the Appropriation of Self-regulatory Activity: A Socio-cultural Analysis of Changes in Teacher–student Discourse about a Graduate Research Portfolio

This study informs the design and development of pedagogical agents that can flexibly support self-regulation by calibrating guidance to specific phases and facets of self-regulated learning (SRL) as individuals encounter challenges and develop more sophisticated understandings of the task and content. From a socio-cultural perspective of self-regulation, we examine the transition of self-regulatory control from teacher to graduate student during naturalistic instructional conferences. Three goals included (a) examining teacher–student dialogue about a complex task to see if fading actually occurs, (b) examining whether support and fading of support are calibrated to specific phases of the self-regulatory process at a given point in time, and (c) examining techniques used for scaffolding and fading scaffolding directed toward specific phases and facets (behavioral, cognitive, metacognitive and motivational) of the self-regulatory cycle. Findings support a socio-cultural perspective of SRL demonstrating a transition from teacher to student regulation across phases and facets of SRL. The paper concludes with an examination of how our findings can inform the design of computer-based scaffolds that can support SRL.

Scaffolding Self-regulated Learning and Metacognition – Implications for the Design of Computer-based Scaffolds

Scaffolding Self-regulated Learning and Metacognition – Implications for the Design of Computer-based Scaffolds

Scaffolding reflection and articulation of scientific explanations in a data-rich, project-based learning environment: An investigation of progress portfolio

In this study, we examined how learners developed scientific explanations about light with the assistance of various technology-based scaffolds. The study emphasis was on scaffolding processes of reflection and articulation. We used a content-neutral software program (Progress Portfolio) to create the instructional scaffolds. A qualitative research design was used to investigate two pairs of prospective teachers in a science content course in engineering. Our findings suggested that the computer-based scaffolds used in our study were useful to support articulation, reflection, and revision of explanations, when certain conditions were met. A major theme of our findings relates to interacting effects among learner characteristics, teacher coaching, software scaffolding design, and task characteristics.