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教学内容:圆柱的表面积计算
教学目标:1、使学生理解圆柱的侧面积和表面积的含义,掌握计算方法,并能正确计算圆柱的侧面积和表面积。
2、在数学学习中获得成功的体验,建立自信心,培养学生良好的空间观念和解决简单的实际问题的能力。
教学重难点:1、理解求圆柱的表面积、侧面积的计算方法,并能正确进行计算。
2、能灵活运用圆柱体的表面积、侧面积的有关知识解决实际问题。
教学过程:
圆柱的侧面积计算
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","type":1},{"source":0,"text":"探究圆柱的表面积计算方法
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","type":1},{"source":0,"text":"学生通过制作学具和绘制圆柱展开图两个环节能理解圆柱的表面积等于两个底面积加上侧面积。
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","type":1},{"img_height":960,"img_width":480,"source":0,"source_platform":"local","text":"生活中的圆柱体,比如笔筒、塑料管、压路机、烟囱等物体的表面积需要求哪几个面呢?
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教学目标:1、使学生理解圆柱的侧面积和表面积的含义,掌握计算方法,并能正确计算圆柱的侧面积和表面积。
2、在数学学习中获得成功的体验,建立自信心,培养学生良好的空间观念和解决简单的实际问题的能力。
教学重难点:1、理解求圆柱的表面积、侧面积的计算方法,并能正确进行计算。
2、能灵活运用圆柱体的表面积、侧面积的有关知识解决实际问题。
教学过程:
圆柱的侧面积计算
","type":1},{"img_height":1800,"img_size":148,"img_url":"https://ss-mpvolc.meipian.me/users/11712381/3e4d2970c61abd24bd4348bf71dfe926__jpg.heic","img_width":1200,"is_origin":false,"source":0,"text":"一张长方形纸可以卷成圆柱体,长方形的长就是圆柱的底面周长,长方形的宽是圆柱的高
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","type":1},{"img_height":1280,"img_width":720,"source":0,"source_platform":"local","text":"录制一段小视频进行讲解,能帮助孩子们理解题意
","type":3,"video_length":58,"video_thumbnail":"https://ss-mpvolc.meipian.me/users/11712381/1583387019904__jpg.heic","video_url":"http://video.ivwen.com/users/11712381/1583387000295.mp4"},{"img_height":1200,"img_size":103,"img_url":"https://ss-mpvolc.meipian.me/users/11712381/7daf1cd9ee99dd3894af7cf5714aeef4__jpg.heic","img_width":1200,"is_origin":false,"source":0,"text":"圆柱的表面积计算
","type":1},{"img_height":800,"img_size":151,"img_url":"https://ss-mpvolc.meipian.me/users/11712381/5a0b36487d7cfb7b80d0ba8557b06de3__jpg.heic","img_width":1200,"is_origin":false,"source":0,"text":"设疑:这两个圆柱体的表面积相等吗?
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","type":1},{"source":0,"text":"学生通过制作学具和绘制圆柱展开图两个环节能理解圆柱的表面积等于两个底面积加上侧面积。
","type":1},{"source":0,"text":"学生解决设疑中的两个圆柱的表面积问题
","type":1},{"img_height":960,"img_width":480,"source":0,"source_platform":"local","text":"生活中的圆柱体,比如笔筒、塑料管、压路机、烟囱等物体的表面积需要求哪几个面呢?
","type":3,"video_length":27,"video_thumbnail":"https://ss-mpvolc.meipian.me/users/11712381/1583387416653__jpg.heic","video_url":"http://video.ivwen.com/users/11712381/1583387410233.mp4"},{"img_height":960,"img_width":480,"source":0,"source_platform":"local","type":3,"video_length":46,"video_thumbnail":"https://ss-mpvolc.meipian.me/users/11712381/1583387486881__jpg.heic","video_url":"http://video.ivwen.com/users/11712381/1583387476625.mp4"},{"source":0,"text":"本节课学生通过动手操作、合作交流,理解并掌握了圆柱的侧面积和表面积的计算方法,但在现实生活中有关表面积的计算比较复杂,需要根据实际情况,确定求哪些面的面积之和。
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