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Elementary science trainee teachers' perceptions and conceptual models of the ozone layer

机译：基础科学实习教师对臭氧层的看法和概念模型

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摘要

The aim of this study was to investigate elementary science trainee teachers' perceptions, misconceptions and conceptual models regarding the ozone layer. A mixed method was used. In Study 1, a questionnaire was administered to trainee teachers (N = 106) before and after instruction of an environmental chemistry course. The questionnaire consisted of 10 multiple-choice questions. The results revealed that while the trainee teachers had a good understanding of ozone-layer depletion, some thought that the ozone layer helps the world to keep getting warm. The trainee teachers were aware that the ozone layer is in danger and believed that many varied forms of pollution are the cause. Nearly half accessed their knowledge about ozone-layer depletion through informal sources such as TV, the Internet, newspapers and journals. In Study 2, an open-ended questionnaire was administered to the trainee teachers (N = 26) after instruction of the same course. Three conceptual models emerged from the trainee teachers' written responses and drawings about the function of the ozone layer. These models were ozone layer as a filter and reflector, a protective cover and a barrier.
机译：这项研究的目的是调查基础科学实习教师对臭氧层的看法，误解和概念模型。使用了混合方法。在研究1中，在环境化学课程的教学前后，对受训教师（N = 106）进行了问卷调查。问卷包括10个多项选择题。结果表明，虽然受训教师对臭氧层的消耗有很好的了解，但有些人认为臭氧层有助于世界变暖。受训教师意识到臭氧层正处于危险之中，并认为是造成污染的多种形式。将近一半的人通过电视，互联网，报纸和期刊等非正式资源获得了有关臭氧层消耗的知识。在研究2中，在指导了同一门课程之后，向受训教师（N = 26）发放了一个开放式问卷。学员的书面回应和有关臭氧层功能的图纸提出了三个概念模型。这些模型是用作过滤器和反射器的臭氧层，保护罩和屏障。

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