二年级美术下册第3课《认识身边的树》课件2人美版.ppt

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认识身边的树,那他们为什么要植树呢?,树木又与我们人类的生活有什么关系呢?,说一说你身边经常见到的树,梧桐树,银 杏,槐树,白杨树,榕树,树的种类繁多,但是它们的基本结构 是相似的,谁能来说一说一棵树 的组成部分?,树是由哪几部分组成的?,树干,树枝,树叶,树根,虽然树的组成部分是一样的,但是不同的树都 有自己的特点:外形、姿态、树叶、纹理,树冠 外形多样,不同的树都有自己的特点:外形、姿态、树叶、纹理,仔细观察, 树皮上有什么线条?,提示:树的各个部位造型线条都不一样,我们在表现时,既要突出它的外形特点,也要选择合适的线条进行表现。,流畅的线条、短密的线条、波浪线、折线,学生作品中的线条有哪些变化?,作业:运用丰富的线条表现自己喜欢的树色彩搭配要有变化构图饱满 可画多种树 选择一种着重表现,课后拓展:不同种类的树,外形,特征都有所不同, 大自然中有许多种类的树木,它们为我们人类造福, 保护我们的环境,我们应该怎样对待它们呢?,

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