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化学是一门以实验为基础的学科。在课堂教学的实际操作过程中,实验操作往往存在诸多困难。将多媒体运用到化学课堂教学中,学生通过多媒体的演示实验,可以更为细致全面地观察、分析实验现象,提高学习兴趣,获得化学知识。 相似文献
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在初中数学教学中，如何培养学生的创新思维能力，其研究就显得十分重要。新颁布的新课标是以开放性、生成性和创新性为基本价值取向的，教师应标举新的课程价值观，即从激发学生超越于知识之上的智慧、灵感、激情和创造性这个宗旨出发，改善和优化整个教学流程．使每个教学环节和片段都充溢生机和活力，使学生最大限度地突破知识体系的“茧缚”而焕发出个体生命力所特有的灵气和才华。下面是我对数学教学中创新思维的培养的几点想法。 相似文献
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Since the publication of the Good Earth in 1922, Pearl S, Buck published another two novels based on the same theme and they were called the House of Earth Trilogy. The House of Earth Trilogy used as a window to understand China for the westerners at that time. And it had a great impact on the whole world. People gave two different views on her success of winning so many awards. Some thought that she wrote what she knew and her works were based on her own experiences. But others said that she was a foreigner and her values, her distinct aesthetic views would affect her writing. So, some of her depictions, to some extent, were untruthful and distorted. The aim of writing this thesis is to give an objective judgment on the Good Earth, and make it easier for us to communicate with the westerners on literature. 相似文献
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幼儿早期阅读教育应该是终身养成性的教育,早期阅读并不在于单纯发展孩子的阅读能力,还要让孩子通过各种途径,接受各种信息,形成看、听、读、写一整套的养成性教育,为幼儿今后的学习打下良好的基础。 相似文献
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出口退税政策的实施对增强我国出口产品的国际竞争力,扩大出口起到了积极的作用。近年来,国家对出口退税政策进行改革,连续下调出口退税率。就出口退税政策调整对我国出口贸易、人民币汇率所产生的影响进行分析,有助于在此基础上提出完善我国出口退税政策及缓解人民币升值压力的策略。 相似文献
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Nano-TiO2 powders with pure anatase sturcture were prepared by the method of precipitation-solution-gelation,using H2TiO3,hydrogen peroxide and ammonia as reactants.Active red X-3B dye solution was selected as a model pollutant for the photocatalysis degradation experiments,The effects of grain sizes,dosage and microostructure of nano-TiO2 on itsphotocatalysis properties were studied.The results show that photo-activity of the nano-TiO2 is enhanced with the grain sizes reducing or dosages increasing of nano-TiO2,Howerver,excess increase in nano-TiO2 concentration is not advantageous to the enhancement of the photo-activity.Anatase TiO2 demonstrated a higher photo-activity than rutile TiO2,The dye solution hardly degraded without nano-TiO2 powders being added into it or under sunlight irradiation. 相似文献
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以＂文化斗士＂著称的赵建秀的作品向来带有强烈的反叛色彩。他极力塑造出华裔坚韧、英勇、智慧等富有男子汉气概的高大形象,并借以强调华裔的民族自豪感。然而,基于他土生土长的美国背景,他的作品不可能摆脱美国主题的束缚,从而也不能不对美国的主体意识就此妥协。赵建秀的反叛与妥协体现了当代华裔美国人的自我民族身份的认识与重建,对研究华裔与中国、华裔与美国的关系有重大现实意义。 相似文献
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正在初中数学的课堂上,单一的教学方法忽略了"学生的认知水平不同接受能力也不同"的特点,使得学生不能同等程度地接受教师的知识讲授,不能达到良好的课堂效果.面对这种困境,分层递进教学突破了这个难点,优化了课堂教学,建立了与以往不同的教学模式,从而实现了对学生的"因材施教".在教学中,教师通过情景创设,激发了学生的全体参与;通过对数学现象的观察交流,教师的及时点拨,建立了正确的思考方法并形成了解决问题的能力;使学生顺利地获取了新知识,通过 相似文献
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