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      欢迎来到原中小学教育资源网!

      七年级上册生物的课件

      课件 时间:2018-05-20 我要投稿
      【www.dnfdy.com - 课件】

        七年级上册生物的课件

        一、素质教育目标

       。ㄒ唬┲督萄У

        1.了解

        生物与环境的关系。

        2.理解

       。1)生物对环境适应的普遍性、相对性。

       。2);ど、警戒色、拟态的概念及实例。

        3.掌握

        ;ど、警戒色与拟态的区别。

       。ǘ┠芰ρ盗返

        观察能力、概括能力、归纳能力、表达能力。

       。ㄈ┑掠傅

        1.通过;ど、警戒色、拟态,认识生物与环境的协调美、和谐美。

        2.由生物与环境的相互关系,树立矛盾对立统一的观点。

        3.培养;せ肪车乃枷胍馐。

       。ㄋ模┭Э品椒ㄑ盗返

        1.学习掌握新概念的方法:由事例归纳、理解概念,通过比较辨别掌握概念。

        2.学习理论与实际相联系的学习方法。

        二、教学重点、难点、疑点及解决办法

        1.教学重点:适应的普遍性,;ど、警戒色、拟态的概念,辨别概念的方法。

        2.教学难点

       。1)引导学生自己总结出;ど、警戒色、拟态的区别。

       。2)认识生物与环境的协调美、和谐美。

        3.教学疑点:;ど肽馓谋姹。

        4.解决办法

       。1)运用投影或多媒体辅助教学,创设;ど、警戒色、拟态的问题情景,学生观察、归纳得出概念。

       。2)对比显示典型的;ど、警戒色、拟态的现象,两两对比发现差别,辨析概念。

       。3)学生对概念及概念间的区别进行概括、表述。

       。4)根据学生练习中反馈信息进行个别辅导或集体答疑。

        三、课时安排

        1个课时。

        四、教学方法

        教师讲述、举例帮助学生理解,学生阅读、观察、思考、表述,积极探索学习。

        五、教具准备

        根据学校设备条件准备:课时目标(文字)、沙漠上的仙人掌(图像)、淡水中的菱(图像)、猛虎袭击鹿群(图像)、鹿、兔、刺猬(豪猪)、黄鼬、蛔虫(图像)、绿草丛中的蝈蝈(图像)、北极地区的白熊(图像)、冬天和夏天的雷鸟(图像)、黄蜂、瓢虫、毒蛇(图像)、竹节虫、尺蠖、枯叶蝶、螳螂(图像)、土壤中的蚯蚓(图像)、生物与环境的关系(文字小结),课堂练习题(文字)。

        六、学生活动设计

        1.学生表述猛兽猛禽猎食的情形,结合挂图或投影了解猛禽猛兽及小动物相互适应的特征。观察沙漠上的仙人掌的投影,了解植物适应环境的特征。

        2.回忆曾观察到的自然现象,结合挂图或投影观察,感知;ど,警戒色和拟态的概念,阅读教材,准备表述概念,体验生物与环境的协调美、和谐美。

        3.比较、分析、归纳、总结概念的区别。

        4.总结生物与环境的关系,了解生态学的概念及研究生态学的意义。

        5.完成巩固练习。

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