三年级美术三下册第12课《巧变虚形与实形》课件2岭南版.ppt

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12、巧变虚形与实形,实形:是指剪、切、挖出来的形状;虚形:是指剪出实形后余下的形状;这一对形状也被称作是正形和负形。,作品欣赏,艺术家巧妙的运用虚形和实形这一组特殊的形状,构成一幅有趣的美术作品,使我们感受到对称与虚实重复的节奏美。,你能分辨出这里的虚形与实形吗?,虚形与实形组合出的有趣画面?,可以这样做:1、选纸:2张,深(大)、浅(小)颜色各1张; 2、对折:把浅颜色(小)的纸对折( 可2次对折); 3、画图:画3-5个图案,有大有小,点线结合; 4、剪图:把画好的图案剪下来,保存好; 5、拼贴:可以左虚形右实形(完成),学生作品欣赏,学生作品欣赏 (提醒),作业要求:运用虚形、实形对称构成的剪纸方法, 同桌合作完成一幅有趣的画面。可以这样做:1、选纸:2张,深(大)、浅(小)颜色各1张; 2、对折:把浅颜色(小)的纸对折( 可2次对折); 3、画图:画3-5个图案,有大有小,点线结合; 4、剪图:把画好的图案剪下来,保存好; 5、拼贴:可以左虚形右实形(完成),作品展示、讲评,

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