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1、青岛版小学科学五年级下册植物的花评课植物的花评课植物的花评课科学课倡导以科学实验为中心,在探究活动中让学生亲身经历实验过程,体验科学的奥秘,尝试科学探究的乐趣,认识科学探究的真谛。这节课根据三维教学目标,制定了本节课三个教学要求:1、使学生认识花各部分名称;2、培养学生解剖花的技能和观察能力。这节课我主要安排了以下几个教学环节。一、激情导入,创设情境,引入正题; 二、探究并发现,探究完全花和不完全花的区别。这一活动分以下几个层次进行的。首先让学生欣赏课件,让学生感知花有完全花和不完全花的区别”。学生在音乐声中,感受并认识了“花世界的美丽”。三、探究花的构造和解剖花是这节课重点和这节课难点。按科
2、学探究的一般规律,应该先让学生进行猜测。猜测花的构造与什么有关?然后设计实验计划,最后按计划分步骤去进行实验,但考虑到学生实际情况,学生从来没有制定过计划,这个实验又很复杂,如果去先猜测,后制定计划,会浪费过多时间,后面实验部分的时间没有保证,整个活动会半途而废。因此这节课这一教学难点的突破,没按常规进行教学设计,而是灵活地结合教材,结合学生实际进行了创造性地处理。即直接提出问题:“花的构造与什么有关?”下面我们来研究。请学生看书,并思考以下问题:花有哪些构造?怎样进行简单的花解剖?等等。通过三四分钟的阅读思考,学生明白了,教师不用过多的讲解,很轻松的使学生明确了研究的步骤。接下来就是巡视指导
3、每组学生进行实验,尽管部分学生摸不着方向,操作能力差,但经过教师指导、演示,六个组中五个组都得出了正确结论。本节课不足之处:1、部分学生对花瓣和花冠这两个概念认识不够,教学难点突破不到位。2、教学评价不到位。学生对这门课来说,第一次见到这样丰富的实验材料,很是新鲜,兴趣高、探究欲望很强烈。但教师的及时评价没及时跟上。结束语!祝大家学到有用的知识,提升自己的能力,实现自己的梦想,踏踏实实干好每一件事,为美好的明天而努力!16qv,6m0f0uv.jtnyl9gnws7a4nt3f0pfez6xaq9ngj5du540mhzvo8j9psvk,ieui3fqwnoe4e3shocjbtk2r97r
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