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分析了新课程标准中环境教育的理念,结合化学教学中环境教育的实践,从教育观念、内容、方法等方面提出了新课程教学中实施有效环境教育的对策。 相似文献
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课内外结合进行环境保护教育 总被引:1,自引:0,他引:1
本文结合国外环境教育课程开设的情况和我国的现状,阐述了如何在中学化学教学中课内课外相结合开展环境保护教育。既充分利用教材潜在因素有机结合环境保护教育,或作为乡土教材中的一部分开课。在课外开展调查、参观、专题讲座、科技兴趣小组等多种形式活动。使化学教学既联系了社会,联系了生产,联系了实际,又使学生受到环境保护教育。 相似文献
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例谈化学课堂上教学情景的创设 总被引:2,自引:0,他引:2
化学课堂教学倡导教学情景的创设,这具有多种意义。如何创设教学情景,怎样的教学情景更具有教育教学价值?本文结合具体的教学案例进行了分析阐述。 相似文献
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结合教学实际讨论了合理运用教学语言的重要性和化学教学语言的运用规范,其中包括教学语言的科学性、启发性、教育性、趣味性、节奏感等。 相似文献
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The photooxidation of chloral was studied by infrared spectroscopy under steady-state conditions with irradiation of a blackblue fluorescent lamp (300 nm < λ < 400 nm, λmax = 360 nm) at 296 ± 2 K. The products were hydrogen chloride, carbon monoxide, carbon dioxide, and phosgen. The kinetic results reveal that the reaction proceeds via chain reaction of the Cl atom: The results lead to the conclusion that mechanism (B) is confirmed to be more likely than mechanism (A), which was favored at one time by Heicklen for the mechanism of the oxidation of trichloromethyl radicals by oxygen molecules: The ratio of the initial rates of CO and CO2 formation gave k7/k6 = 4.23M?1, and the lower limit of reaction (5) was found to be 3.7 × 108M?1 sec?1. 相似文献
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The chemical compositions of the initial bark of the Siberian firAbies sibirica and of the solid residues after extraction with carbon dioxide, water, and alcohol have been studied. On successive extraction, the yield of extractive substances amounted to 25.05% of the absolutely dry bark. The carbon dioxide, aqueous, and alcoholic extracts obtained have been investigated. The carbon dioxide extract was found to contain 34.97% of essential oil, while only traces of it were detected in the aqueous and alcoholic extracts.Krasnoyarsk State Technological Academy. Translated from Khimiya Prirodnykh Soedinenii, No. 1, pp. 42–45, January–February, 1996. Original article submitted August 14, 1995. 相似文献