八年级下册美术教案设计-徐宁超

八年级下册美术教案设计:课题：《五角星》西永安初中徐宁超教学目标：1、了解肌理与质感这一视觉语言，尝试运用简单的工具表现。2、培养学生关注材质的意识，体验肌理、质感表现与情感主题表达之间的内在关系。教学重点：感受不同材质的肌理和质感的差异；肌理和质感简单的制作方法；肌理、质感表现对美术作品表达主题的作用。教学难点：体验肌理、质感的表现与情感主题表达之间的内在关系。教学方法：实践法、欣赏法、讨论法、讲授法、练习法教具准备：碳条、铅笔硬币蔑编学具准备：白纸，铅笔、碳条或蜡笔，表面有凹凸感的实物教学过程：一、导入阶段演示：在蔑编上铺上一张纸，用碳条在其上摩擦，形成肌理。展示拓印后的效果图。提问：这种方法同学们尝试过吗？有谁知道这叫什么方法？（拓印，此方法由来已久，操作方法简单、便易。）指出：画面上的纹理就是材料的肌理。二、探究阶段（一）观察比较观察比较一：牛仔——皮毛——丝绸图片：=503316480&z=&tn=baiduimagedetail&word=%E7%89%9B%E4%BB%94%E8%A3%A4&ie=utf-8&in=11523&cl=2&lm=-1&st=&pn=80&rn=1&di=43063286650&ln=1989&fr=ala1&fm=ala1&fmq=1363244807906_R&ic=&s=&se=&sme=0&tab=&width=&height=&face=&is=&istype=#pn80&-1&di43063286650&objURLhttp%3A%2F%2Fp01.mall.baomihua.com%2Fitems%2Fe9%2Fc1%2Fe9c1cd2bb5bf4e26b19cd12b457dc68d.jpg&fromURLippr_z2C%24qAzdH3FAzdH3F4wss_z%26e3Bkw54ti7w_z%26e3Bv54AzdH3Ffiw6jAzdH3F90ldd&W800&H800&T9535&S176&TPjpg=503316480&z=&tn=baiduimagedetail&word=%E7%9A%AE%E6%AF%9B&ie=utf-8&in=32346&cl=2&lm=-1&st=-1&pn=13&rn=1&di=54491710900&ln=1999&fr=&fm=ala1&fmq=1363244896093_R&ic=0&s=&se=1&sme=0&tab=&width=&height=&face=0&is=&istype=2#pn13&-1&di54491710900&objURLhttp%3A%2F%2Fpic.nipic.com%2F2007-12-15%2F20071215114851117_2.jpg&fromURLippr_z2C%24qAzdH3FAzdH3Fooo_z%26e3Bgtrtv_z%26e3Bv54AzdH3Ffi5oAzdH3F8AzdH3F0dAzdH3Fl01cmv91cj0dn80n_z%26e3Bip4s&W1024&H640&T6719&S326&TPjpg=503316480&z=&tn=baiduimagedetail&word=%E4%B8%9D%E7%BB%B8%E6%9D%90%E8%B4%A8&ie=utf-8&in=22015&cl=2&lm=-1&st=-1&pn=20&rn=1&di=288742644700&ln=1993&fr=&fm=result&fmq=1363245034000_R&ic=0&s=&se=1&sme=0&tab=&width=&height=&face=0&is=&istype=2#pn20&-1&di288742644700&objURLhttp%3A%2F%2Fmap.3dfrom.com%2Fimguploads%2FImage_0709%2F2000%2Fcaizhi%2F16%2Fp%2F063.jpg&fromURLippr_z2C%24qAzdH3FAzdH3F4wr_z%26e3Bn1u654_z%26e3Bv54AzdH3F4wrfAzdH3Fnadc-md_z%26e3Bip4&W640&H427&T9184&S166&TPjpg观察比较二：玻璃——岩石——不锈钢图片：=503316480&z=&tn=baiduimagedetail&word=%E7%8E%BB%E7%92%83&ie=utf-8&in=6216&cl=2&lm=-1&st=-1&pn=33&rn=1&di=226242101950&ln=2000&fr=&fm=detail&fmq=1363245114156_R&ic=0&s=&se=1&sme=0&tab=&width=&height=&face=0&is=&istype=2#pn33&-1&di226242101950&objURLhttp%3A%2F%2Fimages.glass.com.cn%2Fbig%2Foldtrade%2F20099%2F09090316035773.jpg&fromURLippr_z2C%24qAzdH3FAzdH3Fstracal_z%26e3B2swff_z%26e3Bv54_z%26e3BvgAzdH3Ff7rrsy1jpwts-89c0mn0_z%26e3Bip4s&W1556&H1167&T8065&S212&TPjpg=503316480&z=&tn=baiduimagedetail&word=%E5%A4%A7%E7%90%86%E7%9F%B3&ie=utf-8&in=18930&cl=2&lm=-1&st=-1&pn=7&rn=1&di=2955825310&ln=1989&fr=&fm=result&fmq=1363245171343_R&ic=0&s=&se=1&sme=0&tab=&width=&height=&face=0&is=&istype=2#pn7&-1&di2955825310&objURLhttp%3A%2F%2F://image.baidu.com/i?ct=503316480&z=&tn=baiduimagedetail&word=%E4%B8%8D%E9%94%88%E9%92%A2%E9%97%A8&ie=utf-8&in=25898&cl=2&lm=-1&st=&pn=46&rn=1&di=239929250050&ln=1996&fr=&fm=rs1&fmq=1363245328656_R&ic=&s=&se=&sme=0&tab=&width=&height=&face=&is=&istype=#pn46&-1&di239929250050&objURLhttp%3A%2F%2Fimg2.jc001.cn%2Fimg%2F342%2F1349342%2F1269678711911.gif&fromURLippr_z2C%24qAzdH3FAzdH3F2551f_z%26e3B3vaa8_z%26e3BvgAzdH3F1jpwtsAzdH3Fda8cnc9_z%26e3Bip4s&W500&H500&T7102&S94&TPgif（二）交流感受物体肌理、质感感受牛仔——粗糙、无光泽、厚重、不光滑粗犷、奔放1皮毛——蓬松、有光泽、柔软、光滑温暖、高贵丝绸——细腻、有光泽、柔软、光滑华丽、典雅玻璃——坚硬、透明、光滑、能反光晶莹、纯净2岩石——坚硬、不透明、粗糙、无光泽朴实、原始不锈钢——紧密、不透明、光滑、能反光冰冷、现代由此得出（三）基本概念肌理：指材料表面的纹理、构造组织给人的触觉质感和视觉质感。肌理有天然和人工之分，有视觉肌理和触觉肌理之分。质感：视觉肌理一般被称为质感。三、发展阶段（一）《五角星》油画冷军=503316480&z=&tn=baiduimagedetail&word=%E3%80%8A%E4%BA%94%E8%A7%92%E6%98%9F%E3%80%8B%E6%B2%B9%E7%94%BB%E5%86%B7%E5%86%9B&ie=utf-8&in=14206&cl=2&lm=-1&st=-1&pn=0&rn=1&di=212552053600&ln=514&fr=&fm=result&fmq=1363245406640_R&ic=0&s=&se=1&sme=0&tab=&width=&height=&face=0&is=&istype=2#pn0&-1&di212552053600&objURLhttp%3A%2F%2Fart.china.cn%2Fmjda%2Fimages%2Fattachement%2Fbmp%2Fsite8%2F20090513%2F001ec949ffa00b74d02d5a.bmp&fromURLippr_z2C%24qAzdH3FAzdH3Fw6p_z%26e3Bvitgw_z%26e3BvgAzdH3F431wAzdH3Fdaal-anAzdH3F8bAzdH3Fv5gpjgp_d0l08n0_z%26e3Bip4&W400&H396&T12561&S464&TPbmp提问：这个五角星是由什么材料加工而成的？（碎铁皮）这是一幅荣获第九届全国美展（油画部分）金奖的油画作品。作品通过刻画一颗用弹痕累累、火迹斑斑、凸凹不平的碎铁片焊接而成的五角星，以极端的写实手法、精致入微的形象给人以强大的视觉冲击力，使人联想到中国人民军队艰苦卓绝的斗争岁月，寓喻中国革命所付出的沉重代价。让我们感到今天的幸福生活是多么来之不易。（二）《钢水·汗水》油画广廷渤=503316480&z=&tn=baiduimagedetail&word=%E3%80%8A%E9%92%A2%E6%B0%B4%C2%B7%E6%B1%97%E6%B0%B4%E3%80%8B%E6%B2%B9%E7%94%BB%E5%B9%BF%E5%BB%B7%E6%B8%A4&ie=utf-8&in=4389&cl=2&lm=-1&st=-1&pn=0&rn=1&di=189723804501&ln=329&fr=&fm=detail&fmq=1363245439765_R&ic=0&s=&se=1&sme=0&tab=&width=&height=&face=0&is=&istype=2#pn0&-1&di189723804501&objURLhttp%3A%2F%2F作品采用了极度写实的绘画造型语言，以富于感染力的细节描写，把作者体验到的炼钢工人以苦为乐的高尚情操、忘我的劳动精神，