高中学生和教师对有机化学的认知:加纳视角

Esther Nartey, R. Hanson
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引用次数: 1

摘要

本研究的目的是确定高中(SHS)化学学生和教师对有机化学的看法,以及比较学生和教师对有机化学的难点。采用简单随机抽样(摇号)和有目的抽样的方法,抽取我校选修化学课程的学生100名和化学教师10名。本研究收集数据的研究工具是“学生有机化学认知问卷”(OCPQS)和“教师有机化学认知问卷”(OCPQT)。描述性统计(频率和百分比)用于分析收集的数据。结果显示,高中学生对有机化学有相当正面的认知,而高中教师对有机化学有高度正面的认知。烯烃的制备和化学反应、炔烃的制备和化学反应、苯的结构和稳定性、苯的反应、苯与烯烃反应的比较、石油、聚合物、烷烃的命名和结构异构是学生认为难以理解的。其余的加纳SHS有机化学主题(34个主题中的26个)被学生认为是容易理解的。此外,除了苯的反应外,教师认为所有SHS有机化学主题都很容易教。本研究中关于教师和学生对有机化学难题的感知的见解表明,教师的感知以及如何将这些感知传达给学生可以对学习产生重大影响。作者认为,教师和学习者都可以从提高对教学和学习有机化学困难的认识中受益。因此,他们建议进一步研究教师的观念如何影响他们的教学,从而影响学生的经验。此外,在未来的研究中,可以增加一个基于SHS有机化学教学大纲主题的诊断测试,以确定学生认为的困难主题是否实际上是难以回答的问题。这将有助于教师将感知到的困难与实际困难(现实)区分开来,并能够在教学中解决这些困难。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
The The perceptions of Senior High School students and teachers about organic chemistry: A Ghanaian perspective
The purpose of the study was to determine the perceptions that senior high school (SHS) chemistry students and teachers have about organic chemistry as well as to compare organic chemistry topics that are difficult for students and teachers. Simple random sampling (lottery) and purposive sampling methods were used to select a sample of one hundred (100) SHS students who studied elective chemistry and ten (10) chemistry teachers. The research instruments used to collect data for this study were the ‘organic chemistry perceptions questionnaire for students’ (OCPQS) and ‘organic chemistry perceptions questionnaire for teachers’ (OCPQT). Descriptive statistics (frequencies and percentages) were used to analyze the data collected. The findings revealed that these SHS students have a fairly positive perception of organic chemistry while their teachers had a highly positive perception of organic chemistry. Preparation and chemical reactions of alkenes, preparation and chemical reactions of alkynes, structure and stability of benzene, reactions of benzene, comparison of reactions of benzene and alkenes, petroleum, polymers and naming of alkanes and structural isomerism were perceived by students as difficult to understand. The rest of the Ghanaian SHS organic chemistry topics (26 out of 34 topics) were perceived as easy to understand by students. Also, the teachers perceived all the SHS organic chemistry topics as easy to teach with the exception of reactions of benzene. The insights gained about teachers’ and students’ perceived difficult organic chemistry topics in this study imply that teachers’ perceptions and how these are communicated to students can have significant effects on learning. The authors believe that both teachers and learners could benefit from this increased awareness of perceptions about difficulties in teaching and learning organic chemistry. They therefore suggest that further studies into how teachers’ perceptions influence their teaching and consequently their students’ experiences be carried out. In addition, in future research, a diagnostic test based on the topics in the SHS organic chemistry syllabus could be added to ascertain whether the perceived difficult topics are actually difficult for students to answer questions on. This would help teachers to separate perceived difficulties from the actual difficulties (realities) and be able to address them in their lessons.
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