Precision and Accuracy: Knowledge Transformation through Conceptual Learning and Inquiry-Based Practices in Introductory and Advanced Chemistry Laboratories

Precision and Accuracy: Knowledge Transformation through Conceptual Learning and Inquiry-Based Practices in Introductory and Advanced Chemistry Laboratories
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精确度和准确性:通过入门和高级化学实验室中的概念学习和基于探究的实践进行知识转化

DOI:
10.1021/acs.jchemed.9b00563
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发表时间:
2020
影响因子:
3
通讯作者:
Lloyd, Judith
Lloyd, Judith
中科院分区:
化学2区
文献类型:
--
作者:
Gao, Ruomei;Lloyd, Judith

文献摘要

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虽然广泛的研究已经研究了化学教育中探究式学习的有效性,但很少有人在整个大学化学课程中跟踪本科生的表现。在这项研究中,我们描述了一个教学模式的概念学习和基于探究的做法(CLIP)和评估学生的知识转化的精密度和准确性的实验室组成部分的介绍化学,分析化学,仪器分析和物理化学。学生在书面实验报告中的表现表明,概念的重复和教师的具体反馈对于构建精确度和准确度的知识至关重要。我们观察到学生对自己理解的感知与他们确定数据集精确度和准确度的能力之间存在明显差距。这种差距随着学生从入门到高级化学实验室的发展而减小,但在整个研究过程中学生参与者的流失增加了意义的不确定性。与传统的教学相比,增强学习观察到在介绍化学I实验室思想CLIP,概念/技能培训,具体的反馈,和以学生为中心的活动的支持。这项研究有利于社区成员谁是从事支持学生的理论与实践的掌握。
Whereas extensive studies have examined the effectiveness of inquiry-based learning in chemistry education, few have tracked undergraduate performance throughout the college chemistry curricula. In this study, we describe an instructional model of conceptual learning and inquiry-based practices (CLIP) and assess students’ transformation of knowledge about precision and accuracy in the laboratory components of Introductory Chemistry, Analytical Chemistry, Instrumental Analysis, and Physical Chemistry. Student performance in written laboratory reports reveals that repetition of concepts and specific feedback from instructors are essential in constructing knowledge about precision and accuracy. We observed a distinct gap between students’ perception of their understanding and their ability to determine precision and accuracy in data sets. This gap decreases as students move from introductory to advanced chemistry laboratories, but loss of student participants throughout the study increases the uncertainty in the significance. In contrast to traditional teaching, enhanced learning was observed in Introductory Chemistry I Laboratories thought CLIP, with the support of concept/skill training, specific feedback, and student-centered activities. This study benefits members of the community who are engaged in supporting students’ mastery of theory with practice.
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