PDF《念奴娇·赤壁怀古 教案》

(三)课堂练习 例1:用篱笆围一个面积为

100 2 m 的矩形菜园,问这个矩形的长、宽各为多少时用的 篱笆最短?最短的篱笆是多少? 例2:一段长为 36m 的篱笆围成矩形菜园,问这个矩形的长、宽各为多少时菜园面积最 大?最大面积是多少?

(四)小结作业 提问:今天有什么收获? 引导学生回顾:基本不等式以及推导证明过程. 课后作业:思考还有什么方法能够证明基本不等式.

四、板书设计 基本不等式 基本不等式: 例1: 例2: 英语 Body language and non-verbal communication Greetings around the world Teaching aims: Knowledge aim: Students will know more about different greetings in different countries and enrich their cross-culture knowledge. Ability aim: Students will behave properly in different situations. Emotional aims: 微信号:ln-jszgks QQ 群:428345229 关注微信 ln-jszgks 赢好礼! 回复 手册 面试备考为你准备! Students will cultivate their awareness of cross-cultural communication. Teaching key points and difficult points: Key points: Different greeting ways around the world Difficult Points: How to arouse their cross-cultural awareness. Teaching procedures: Step

1 Lead-in After greeting the students, the teacher will show different pictures of body language and ask the students to describe the information they get from the pictures. Step

2 Pre-reading Ask students to look at the picture and predict where the people in it are from. Step

3 While-reading

1 Fast reading: ①Read and choose the best title for the passage ( Greetings around the world) ②Who can match the paragraphs with their main ideas? ( 1. ways of communication 2. Greetings in western countries 3. Greetings in Asian countries 4. American youth'

s greeting today 5. Fascinating body language) ③Answer the following two questions: a What do Europeans and Americans do traditionally ? ( shake their right hands) b What do Muslims do to greet? ( give a salaam : they touch their h........