فایل ورد کامل تعیین سطح آگاهی معلمان سطح ابتدایی در مورد لایه اوزون

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تعداد صفحات این فایل: ۱۳ صفحه

بخشی از مقاله انگلیسیعنوان انگلیسی:Determination of pre-service elementary science teachers’ knowledge level about ozone layer~~en~~

Abstract

One of the global environmental problems which threaten the earth and humanity is the Ozone Layer Depletion and the negative results that it causes. With this study, the aim is to determinate the knowledge level of pre-service elementary science teachers about the causes of the Ozone Layer Depletion, results and the precautions they will take. In this study, 30-item-questionaire has been applied to 319 pre-service elementary science teachers using survey model. Percentage (%), frequency (f) and the singlefactor variance analysis have been applied to the data obtained from application using this SPSS statistical packet program. At the end of the analysis, it has been revealed that pre-service teachers who educate the generations that will face up with this important environmental problem have both some misconceptions and inadequate and locking knowledge about Ozone Layer Depletion. Besides, it has been determinate that specific there is no difference between knowledge level of pre-service elementary science teachers about Ozone Layer according to grade level.

۱ Introduction

Global warming as a result of the increase in the greenhouse effect, the thinning of the ozone layer and its consequences and the acid rains threatening the earth can be listed among the most effective global environmental problems (Brown, 2000; Bozkurt & Aydo÷du, 2004). Environmental education plays a crucial role in solving these global environmental problems. Environmental education which will start from pre-school period should not be loading encyclopedic knowledge in the minds, it should be making students conscious of environmental threats, making them think about and produce solutions, and making them to gain the insight and consciousness that a clean, stable and healthy environment is necessary for a high-quality life (Soran et. al., 2000). The ozone layer, which is highly important for the lives of living beings, has a function to filter the ultraviolet lights that come from the sun and that can have harmful effects for the living beings (Kele, 1997). As the ozone layer becomes thinner, more ultraviolet lights reach the earth and endanger humanity and biological life (Cordero, 2001). Chemical substances called chlorofluorocarbons (CFCs) cause the protective ozone layer to become thinner. Climate changes, weakening of human and animal immune systems and skin cancer are among the consequences of the thinning of the ozone layer (Diffey, 2000; Cnar, 2003; Saraiya et al., 2004; Kirsner et al., 2005). It also causes visual defects such as cataract and other cancer types by making the immune system of the living beings weaker (Akn, 2008). Moreover, the negative effects of the thinning of the ozone layer on plants and animals are being investigated (Thines et al., 2008). It is highly crucial for the future of the earth and the living beings to make individuals conscious and sensitive and also to give them the necessary environmental education about the environmental problems which can have important consequences for the Earth and the living beings. At this point, environmental consciousness should be raised in individuals; the level of their knowledge about the environment and environmental problems and also the wrong concepts they have on these issues should be recognized (Bozkurt & Aydo÷du, 2004). The aim of this research was to determine the pre-service elementary science teachers’ knowledge level about ozone layer which is the part of a global environmental problem.

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