陈继树

【摘要】《一个因数中间有0的乘法》课例没有设计多媒体课件,只绘制两幅课本上主题图的幻灯片,适用于广大农村学校教学,可操作性强。教学设计巧妙。教师抓住主题图的两个故事创设美妙情境,为学生创造轻松愉快的学习氛围。激发学生学习热情和探究新知的欲望。引导学生观察、想象、交流和解决问题等一切活动,每个环节设计新颖,整个过程流畅,层次清晰。大大改变了以前计算课单调、枯燥无味的现状。自编算式让学生有选择地做自己喜欢的题,激活了学生对计算题计算的兴趣,满足了不同程度的学生学到不同的数学。从老寿星的密诀教育学生积极锻炼身体。课后总通过反思获取知识,有利于培养学生科学的学习方法,同时鼓励学生课外积极收集信息,养成课外探究的习惯。

【关键词】课例;设计巧妙;赏析精辟

《A factor in the center has 0 multiplications 》teaching design and analyze

Chen Ji-shu

【Abstract】《A factor in the center has 0 multiplications 》the lesson example have no design multimedia lesson piece, the slide which draw two lesson origin up the topic diagram, be applicable to a large village school teaching, the maneuverability be strong.The teaching design is skillful.The teacher hold tight topic diagram of two story establish a wonderful scenario and pursue studies to living to create easy delectation of study atmosphere.Stir up a student a study enthusiasm and investigation new information of desire.Leading student observation, imagination, exchanges reach agreement a problem etc. definitely the whole activity, each link design novel, the whole process flowing freely, the layer be clear.Consumedly change past calculation lesson monotonous, dull present condition.From plait calculate the type let the student have choice ground to be oneself like of, activated a student to calculation interest for compute, satisfy dissimilarity degree of the student learn dissimilarity of mathematics.Educate students from the know-how of old life star aggressive toughen body.Total pass to introspect to obtain knowledge after the lesson, be advantageous to development student's science of study method, in the meantime encouragement student lesson outside aggressive collections information, become lesson outside investigation of habit.

【Key words】Lesson example;The design is skillful;Analyze the Jing open up

教学内容:

人教实验版三年级下册第83页的例5,第84页的例6

教学目标:

① 知道0和任何数相乘都得0的结论

② 理解一个因数中间有0的乘法算理,能正确地计算

③ 培养学生初步地类推迁移的数学思想

重难点:

① 掌握0和任何数相乘都得0的结论和一个因数中间有0的计算方法。

② 初步理解0和任何数相乘都得0的道理。

教学过程:

课前准备(学生背读1—9的乘法口诀)

1.创设情境,激情引趣

同学们,你们喜欢看西游记吗?幻灯展示课本83页主题图,请同学们看一看,并说一说主题图中描述的是哪一段小故事。

生描述:(是《西游记》中王母娘娘派仙女摘仙桃的故事)