土耳其科学高中学生的电子云心智模型

IF 2.6 2区 教育学 Q1 EDUCATION & EDUCATIONAL RESEARCH
Sevgül Çalış
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引用次数: 0

摘要

本研究重点考察了土耳其一所理科高中十一年级和十二年级学生关于电子云概念的心智模式。研究涉及 72 名学生,采用了案例研究法。选择样本的前提条件是学生在化学课上学习过现代原子理论单元。本研究选择的电子云概念与 "原子和周期系 "和 "现代原子理论 "单元相结合。为了指导研究问题,我们每隔三周对参与研究的教师所教的不同班级的课程和单元活动的进展情况进行了观察。考虑到高中化学课程目标,研究数据使用了由 7 个开放式问题组成的数据收集工具。研究问题分为三类:概念类、关系类和视觉类。为数据分析制定了一个评分标准,并确定了与理解水平相对应的代码。评估结束后,确定了三种心智模式:电子云模式、混合/合成电子云模式和原始模式。针对这些模式,确定了八个心智模式类别:完全科学、部分科学、概念、关系、概念-关系、概念-视觉、关系-视觉和不相容。在研究结束时,只有 5.56% 的学生对所有类别的回答都达到了科学理解水平,属于电子云模型下的完全科学模型类别。16.67%的学生属于部分科学模型类别,75.29%的学生展示了混合/合成电子云模型。一小部分学生(2.78%)采用了原始模型。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Turkish science high school students’ mental models of the electron cloud

This study focuses on examining the mental models of 11th and 12th-grade students attending a science high school in Turkey regarding the concept of the electron cloud. The study involved 72 students and employed the case study method. The precondition for selecting the sample was that the students had covered the unit on modern atomic theory in their chemistry classes. The concept of the electron cloud chosen for the study is integrated into the units of “Atom and Periodic System” and “Modern Atomic Theory.” To guide the research questions, the progression of the lessons and activities within the unit were observed in three-week intervals across different classes taught by the participating teacher. Research data were collected using a data collection tool consisting of 7 open-ended questions, considering the high school chemistry course objectives. The research questions were prepared in three categories: conceptual, relational, and visual. A rubric was developed for data analysis, and codes corresponding to levels of understanding were determined. At the end of the evaluation, three mental models were identified: the electron cloud model, the hybrid/synthesis electron cloud model, and the primitive model. For these models, eight mental model categories have been determined: fully scientific, partially scientific, conceptual, relational, conceptual–relational, conceptual-visual, relational-visual, and incompatible. At the conclusion of the study, only 5.56% of students provided answers at the scientific understanding level for all categories, placing them in the full scientific model category under the electron cloud model. 16.67% of students fell into the partial scientific model category, while 75.29% demonstrated a hybrid/synthesized electron cloud model. A small portion, 2.78%, adopted a primitive model.

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来源期刊
CiteScore
4.80
自引率
26.70%
发文量
64
审稿时长
6-12 weeks
期刊介绍: The journal for teachers, researchers and other practitioners in chemistry education.
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