周长的测量与计算（Measurement and calculation of circumference）.docVIP

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周长的测量与计算（Measurement and calculation of circumference）.doc

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周长的测量与计算（Measurement and calculation of circumference）

周长的测量与计算（Measurement and calculation of circumference） Collected by oneself Mistakes are unavoidable For reference only In case of error Please correct me! Thanks Measurement and calculation of circumference Lesson plan and lesson presentation Nanchang Patriotic Road Primary School Liudongping Measurement and calculation of circumference Teaching content: the concept of perimeter and the calculation of girth Teaching requirements: 1. Let the students know the meaning of the perimeter Accounting is the perimeter of squares, rectangles, etc. 2. Let the students calculate the perimeter of the triangle, parallelogram and other plane figures Teaching emphasis: perimeter meaning and perimeter measurement and calculation Teaching difficulties: measurement of perimeter Lesson type: new instruction Class: 1 hours Teaching preparation: Making Courseware Multimedia projection Meter Student ruler Cuboid, cube box etc. Teaching process: Courseware: Show Picture 1: beautiful vegetable land Figure 2: beautiful vegetable plots are destroyed by human beings Picture 3: piggy toot is using his head Guiding lesson: Teacher said: today, the teacher invited a guide for the students and led them to visit the vegetable garden. The guide said, good students!! Today we are going to visit the vegetable garden of the little pig Oh! The beautiful vegetable plot was trampled down Please think of a good way for Dudu How to protect vegetable land from human destruction? Carry out a four person group discuss Reporting results Two division: the students are very good advice! Today we are going to study one of the fences Show courseware A fence fence enclosed Three Division: the vegetable garden around a circle The length of this circle is called the perimeter of the vegetable field (blackboard: girth) Id like to know the length of the week Can you tell me how to use it? (panel discussion) Come to be measurable Computable (blackboard writing: Measurement and calculation) Four, (1) where does life nee