Students' Understanding of Bonding and Bonding Models Across the Undergraduate Chemistry Curriculum: A Cross-Sectional Analysis

学生对本科化学课程中的键合和键合模型的理解：横断面分析

• 批准号: 2234756
• 负责人: Nicole Becker
• 金额: $ 29.92万
• 依托单位: University of Iowa
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2023
• 资助国家: 美国
• 起止时间: 2023-10-01 至 2026-09-30
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2234756&HistoricalAwards=false
• 关键词: Students; Understanding; Bonding; Models; Across

This project aims to serve the national interest by providing an evidence base for improving undergraduate chemistry education in order to retain and better prepare STEM graduates. In particular, the research team intends to advance knowledge of how undergraduate chemistry students’ ideas related to bonding models develop across undergraduate chemistry courses. This work is important because understanding chemical bonding -- how and why interactions between atoms and molecules form -- is central to solving chemical problems and discovering new materials that can address societal needs. In this project, researchers will conduct problem solving interviews with college chemistry students in which the students are asked to use their knowledge of bonding models to predict and explain chemical behavior. Findings related to how students’ knowledge develops as they progress from introductory to more advanced courses will inform practices through which instructors may support deeper and more transferable knowledge related to bonding models. By identifying conditions under which improved student learning about bonding models occurs, the project will support the success and preparedness of undergraduate chemistry students graduating from U.S. institutions.The goal of this project is to characterize the ways in which college chemistry students use knowledge about bonding models to predict and explain chemical phenomena within increasingly advanced course contexts. The studies in this project will address chemistry students’ development of both conceptual and epistemic knowledge resources (i.e. ideas about how models are developed, evaluated, and refined in scientific inquiry). To accomplish this, students enrolled in general, organic and inorganic chemistry will be interviewed using phenomena-based, open-ended questions which ask students to make inferences using bonding models and critique hypothetical student responses. Analyses informed by coordination class theory will give insight as to the contexts in which students knowledge resources are activated and the interplay between students’ conceptual and epistemic knowledge about bonding models. This cross-sectional approach to examining students’ reasoning will enable identification of possible trajectories from novice to expert-like reasoning about bonding models and will provide insight as to the role of the curriculum in supporting the development of normative scientific reasoning. The results will be published in relevant scholarly journals and presented at regional and national STEM education conferences. The NSF IUSE: EDU Program supports research and development projects to improve the effectiveness of STEM education for all students. Through the Engaged Student Learning track, the program supports the creation, exploration, and implementation of promising practices and tools.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

该项目旨在为国家利益服务，为改善本科化学教育提供证据基础，以留住和更好地培养STEM毕业生。特别是，研究小组打算推进本科化学学生的想法如何在本科化学课程中发展成键模型的知识。这项工作很重要，因为了解化学键-原子和分子之间的相互作用如何以及为什么形成-对于解决化学问题和发现可以满足社会需求的新材料至关重要。在这个项目中，研究人员将与大学化学专业的学生进行问题解决访谈，要求学生使用他们对键合模型的知识来预测和解释化学行为。学生的知识如何发展，因为他们从入门到更先进的课程进展相关的调查结果将通知实践，通过教师可以支持更深层次和更可转移的知识相关的粘合模型。通过确定条件下，改善学生学习有关键合模型发生，该项目将支持本科化学学生的成功和准备从美国院校毕业。该项目的目标是表征的方式，大学化学学生使用有关键合模型的知识来预测和解释化学现象在日益先进的课程背景。在这个项目中的研究将解决化学学生的概念和认识的知识资源（即关于如何在科学探究中开发，评估和完善模型的想法）的发展。为了实现这一目标，学生就读于一般，有机和无机化学将使用基于现象的，开放式的问题，要求学生使用粘合模型和批判假设的学生反应作出推论进行采访。协调类理论的分析将提供洞察的背景下，学生的知识资源被激活和学生的概念和认知知识之间的相互作用的粘合模型。这种横截面的方法来检查学生的推理将使识别可能的轨迹从新手到专家一样的推理粘合模型，并将提供洞察力的课程，在支持规范的科学推理的发展的作用。研究结果将发表在相关学术期刊上，并在地区和国家STEM教育会议上发表。 NSF IUSE：EDU计划支持研究和开发项目，以提高所有学生STEM教育的有效性。该奖项反映了NSF的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。