Connecting explanations to representations: benefits of highlighting techniques in tutorial videos on students’ learning in organic chemistry

Connecting explanations to representations: benefits of highlighting techniques in tutorial videos on students’ learning in organic chemistry
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将解释与表示联系起来:在学生学习有机化学的教程视频中强调技术的好处

DOI:
10.1080/09500693.2021.1985743
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发表时间:
2021
影响因子:
2.3
通讯作者:
Bernholt
Bernholt
中科院分区:
教育学3区
文献类型:
--
作者:
Rodemer;Eckhard;Graulich;Bernholt

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科学教育研究同意,该学科学习者的关键挑战之一当然是将特定领域的表示与基本概念联系起来。支持学生建立适用的联系的一种方法是在多媒体教学中使用有目的的突出显示技术。为了考察不同的突出显示技术对学习的影响,171名化学本科生被提供了静态、动态和非突出显示的辅导视频。结果显示,观看动态突出显示的辅导视频的学生在直接记忆任务中给出了更复杂的答案。此外,结果表明,静态和动态高亮显示技术都补偿了先验知识不足的情况。这一发现得到了因果中介分析的支持,该分析表明,不同的突显技术抑制了先验知识的影响。除了学生的学习结果外,学生对不同教程视频的评价显示,突出说明在感知更高的可理解性方面具有显著优势。结果支持在教学形式中使用适当的突出显示技术,以促进概念知识和表征之间更紧密的联系。
Research in science education agrees that one of the key challenges of learners in the discipline is certainly connecting domain-specific representations to the underlying concepts. One way of supporting students to make applicable connections is using purposefully designed highlighting techniques in multimedia instructions. In order to examine the influence of different highlighting techniques on learning, 171 chemistry undergraduate students were provided with tutorial videos either with static, dynamic or without highlighting. The results show that students viewing tutorial videos with dynamic highlighting gave more sophisticated answers in direct retention tasks. Furthermore, results indicate that low prior knowledge is compensated by both static and dynamic highlighting techniques. This finding is supported by causal mediation analysis, which indicates that the effect of prior knowledge is moderated by the different highlighting techniques. Besides student learning outcomes, students’ evaluation of the different tutorial videos shows significant benefits of the highlighted instructions in terms of perceiving higher comprehensibility. The results support the use of appropriate highlighting techniques in instructional formats to foster a stronger link between conceptual knowledge and representations.
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