三年级下册硬笔书法教案
共 1 课时课题 1、提土旁的字课时第 1 课时
知识与1、认识提土旁的字,2、学会提土旁的字的写法, 技能
过程与1、认识提土旁的字的特点,2、掌握提土旁的字的写法,3、学习基三维方法本结构的写法, 目标
情感、态
度、价值认识并学会起提土旁的字的写法～感受祖国文字的神奇与魅力:
观
教学学习提土旁的字的写法, 重难点
教学教学示范提土旁的字, 示范、区分与讨论准备方法
教学过程及主体设计批注
一、导入:
我们已经学习了汉字偏旁的学习～今天～我们来学习汉字部首的学习。
二、入新课:
1、提土旁的字的认识:
教师出示教材。学生观察～并得出一个什么样的结论,
学生观察并发言。
坏
垣
培
墙
堰
境
坛
均
通过以上的汉字出示～教师分析学生的回答看是否击中要害～同时加以指导和细节地方的强调。比如:
提土旁要注意竖画不能平分横～而是左宽右窄,
同时～让学生找准主笔。这是一个难点～学生只有找准了主笔～写出的汉字才能立得起～坐得正～写得大气。
center pin checks and anchoring the inner cylinder. According to While coupling alignment should keep oil out of cavity and locate the rotor axis neck raised are within the prescribed limits, there should be no gaps, Horn, Horn and Horn 0.05mm feeler gauges fit into. Center coupling, condenser water filling and water-filled according to factory requirement. For coupling three supported rotor Center, the mouth under the coupling between the value should be as stipulated in the manufacturer, usually 0.15~0.25mm. In the case of coupling connection, if possible, lifting only one bearing end of the support bearing of the rotor, remove the bearing, fitted with special tiles and special lifting tools, disc rotors, check the journal flutter tile, should generally be less than 0.10MM. When the couplings and rotor comes when there is a conflict, the coupling Centre shall prevail. 6.4.5.2.2 shaft looking for: ... 6.4.5.3. Provisional bolt confirmed the positioning of the
rotor size, as well as the coupling between the adjustment shim thickness accuracy, drawings to meet the technical requirements. Plane, cylindrical and clean the coupling bolt holes should be clean and
without burrs, scrap iron and grease-free, relative position of the coupling according to the drawing requirements are. Coupling top screws, round distance apart, indicators to monitor movement of the aircraft,
its value is allowed to pass the value axis moving, mounted adjustment pads, note pads installation direction guide pin coupling with process end closed. The back wheels slowly tightened, when 2mm or so, with standard white bars where two back wheel bolt hole measurement above and below, confirm two back wheel bolt hole concentricity. Then, the symmetrical horizontal mount two temporary bolts tightened, attention to monitor dial indicator, then install the symmetrical temporary bolts, this time sites slowly moving rotor, in the measured circumference of 8 equal parts back wheel rim rock, each measuring relative changes in value should be less than 0.02mm. 6.4.5.4 coupling reamed and paired
bolt reaming die reamer, adjustable reamers, boring mill, in several ways. 6.4.5.4.1 General requirements before reaming or boring,
2、示范:
师在黑板上示范～学生先观察～然后找出其中的特点并加以说明。
师在学生回答后需要强调:
写竖要用力～提画重起～向上一挑出锋。
3、学生练笔～教师巡视,
4、同组交换检查～并讨论～看有哪些同学写得好～好在什么地方～哪些又写
得不像～哪些地方有毛病～怎么修改。
5、各组抽一个同学说出本组同学书写情况。
6、分别抽一些写得好和差的同学上台演示并修改。
