从能量和力的角度开发和验证与《下一代科学标准》相一致的化学键结构图

IF 3.6 1区 教育学 Q1 EDUCATION & EDUCATIONAL RESEARCH Journal of Research in Science Teaching Pub Date : 2023-09-28 DOI:10.1002/tea.21906
Leonora Kaldaras, Hope O. Akaeze, Joseph Krajcik
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引用次数: 0

摘要

化学键是解释许多现象的核心。化学教育研究和《K-12 科学教育框架》(以下简称 "框架")提出了学习化学键的新方法,其基 础是:(1)利用电场力平衡和能量最小化的思想来解释键的形成;(2)利用以这些思想 为基础的学习进展(LPs)来支持学习;(3)让学生参与三维学习,体现在整合科学知 识的三个维度来理解现象。这三个维度包括学科核心思想、科学和工程实践以及跨领域概念。虽然该框架描述了三维学习的理论基础,但用于开发和验证三维学习的 LP 的实证证据却很有限。本研究针对化学键这一主题解决了这一问题。我们以电场平衡和能量最小化的理念为基础,开发并验证了化学键的三维结构图。建构图代表了更细粒度的学习方法,时间跨度较短,侧重于更大规模学习方法的特定方面。关于化学键这一主题,还从未有过与 NGSS 一致的、经过验证的 3D LP 报告。该学习进度表基于使用与 NGSS 一致的课程的九年级中西部学生的数据。我们使用了多种有效性证据来源,包括使用为探究三维结构图水平而开发的评估工具进行的访谈和项目反应理论分析。我们展示了使用评估工具为学习者个人和群体分配等级的可行性,这对三维建构图的实际应用至关重要,并为教师提供了如何促进学习的信息。我们希望在此介绍的三维建构图能够作为一种指南,用于开发基于基本科学原理并与 NGSS 一致的化学键教学和评估方法。
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Developing and validating an Next Generation Science Standards-aligned construct map for chemical bonding from the energy and force perspective

Chemical bonding is central to explaining many phenomena. Research in chemical education and the Framework for K–12 Science Education (the Framework) argue for new approaches to learning chemical bonding grounded in (1) using ideas of the balance of electric forces and energy minimization to explain bond formation, (2) using learning progressions (LPs) grounded in these ideas to support learning, and (3) engaging students in 3D learning reflected in integrating the three dimensions of scientific knowledge to make sense of phenomena. The dimensions include disciplinary core ideas, scientific and engineering practices, and crosscutting concepts. While the Framework describes the theoretical basis of 3D learning, empirical evidence for the development and validation of LPs for 3D learning is limited. This work addresses that issue for the topic of chemical bonding. We develop and validate a 3D construct map for chemical bonding grounded in the idea of balance of electric forces and energy minimization. A construct map represents a finer-grained LP spanning a shorter period and focusing on specific aspects of a larger-scale LP. An NGSS-aligned validated 3D LP has never been reported for the topic of chemical bonding. The LP is based on data from 9th grade Mid-Western and Western students who used the NGSS-aligned curriculum. Multiple validity evidence sources, including interview and item response theory analysis using an assessment tool developed to probe the 3D construct map levels, were used. We demonstrate the feasibility of using the assessment tool for assigning levels to individuals and groups of learners, which is essential for the practical applicability of the 3D construct map and provides teachers with information on how to promote learning. We hope that the 3D LP presented here will serve as a guide to develop instructional and assessment approaches for chemical bonding grounded in the fundamental scientific principles and aligned to NGSS.

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来源期刊
Journal of Research in Science Teaching
Journal of Research in Science Teaching EDUCATION & EDUCATIONAL RESEARCH-
CiteScore
8.80
自引率
19.60%
发文量
96
期刊介绍: Journal of Research in Science Teaching, the official journal of NARST: A Worldwide Organization for Improving Science Teaching and Learning Through Research, publishes reports for science education researchers and practitioners on issues of science teaching and learning and science education policy. Scholarly manuscripts within the domain of the Journal of Research in Science Teaching include, but are not limited to, investigations employing qualitative, ethnographic, historical, survey, philosophical, case study research, quantitative, experimental, quasi-experimental, data mining, and data analytics approaches; position papers; policy perspectives; critical reviews of the literature; and comments and criticism.
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