CAREER: Exploring Representations of Structure: The Impact of Visualization on Conceptual Understanding in Chemistry

职业：探索结构的表示：可视化对化学概念理解的影响

• 批准号: 0133989
• 负责人: Barbara Gonzalez
• 金额: --
• 依托单位: CSU Fullerton Auxiliary Services Corporation
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-02-15 至 2009-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0133989&HistoricalAwards=false
• 关键词: CAREER; Exploring; Representations; Structure; Impact

The broad aim of this project is to conduct research over a five-year period that investigates the link between visual representations and conceptual understanding of atoms and molecules in simple inorganic and organic molecules. Specific goals of the project are to investigate learners' understanding of simple inorganic and organic structures at the atomic and molecular levels, explore how visual spatial-ability relates to the formation of representations of atomic and molecular structure, and develop an Internet-deliverable, multimedia package that has instructional and assessment functions in promoting conceptual understanding of atomic/molecular structure through visualization. Specific objectives of the study are to survey student understanding of the difference between atoms and molecules at the microscopic level in relation to their understanding of elements and compounds at the macroscopic level, determine the conditions under which learners invoke the particle nature of matter when explaining chemical phenomena such as phase changes or chemical reactions, describe the nature of students' two-dimensional and three-dimensional understanding of atomic and molecular structure in simple molecules, determine the nature of the relationship between visual-spatial ability and the formation of representations of atomic and molecular structure, investigate the efficacy of visual-spatial training in the development of the particle nature of matter using handheld models and molecular modeling applications, and examine the effect of visual-spatial training using handheld models or molecular modeling software on the ability of students to alternate between two- and three-dimensional representations of molecules. Research methods include semi-structured interviews, paper-pencil and on-line tasks, and video recording of student performance. Subjects will be enrolled in chemistry courses for majors, non-majors, and for future elementary teachers. Results from the research will lead to a better understanding of the relationship between cognitive skills and conceptual development leading to improved curricular design and pedagogy in the chemistry classroom.

该项目的主要目标是在五年内进行研究，调查简单无机和有机分子中原子和分子的视觉表示与概念理解之间的联系。 该计划的具体目标是调查学生在原子和分子水平上对简单无机和有机结构的理解，探索视觉空间能力如何与原子和分子结构表征的形成相关，并开发一个互联网交付的多媒体套件，该套件具有教学和评估功能，通过可视化促进对原子/分子结构的概念理解。 该研究的具体目标是调查学生在微观水平上对原子和分子之间差异的理解与他们在宏观水平上对元素和化合物的理解之间的关系，确定学习者在解释化学现象（如相变或化学反应）时调用物质的粒子性质的条件，描述学生对简单分子中原子和分子结构的二维和三维理解的本质，确定视觉空间能力与原子和分子结构表征形成之间关系的本质，研究视觉空间训练在使用手持模型和分子建模应用程序开发物质的粒子性质方面的功效，并检查使用手持模型或分子建模软件的视觉空间训练对学生在分子的二维和三维表示之间交替的能力的影响。研究方法包括半结构化访谈、纸笔和在线任务，以及学生表现的视频记录。 科目将被纳入化学课程的专业，非专业，并为未来的小学教师。 从研究的结果将导致更好地理解认知技能和概念发展之间的关系，从而改善课程设计和教学法在化学课堂。