教学目标

知识与技能：

1. To know how the microwave oven was invented.

2. Be able to make a summary of a passage.

过程与方法： 

Learning by reading.

情感、态度和价值观：

 Ss will know something unexpected may be the beginning of an invention.

教学重点 Key phrases

教学难点 How to make a summary

准备阶段

预习导航

了解本单元的学习目标

情境导入

Is there a microwave oven in your home? 

Do you think it is convenient for your life?

探究阶段

探索新知

Step I Pre-reading

Ss listen to the tape for a better pronunciation.

Step II While-reading

Activity 1  Fast reading to answer the question: when was the microwave oven invented?

Activity 2 Careful reading to finish Task 5 & 6

Activity 3 Explanation of the passage

T help to analyze the difficult points of the passage.

1. When the American engineer let his chocolate bar get too close to an electronic tube that generates high-frequency radio waves, it started to melt. 

当这位美国工程师将他的巧克力棒放得太靠近那个产生高频无线电波的电子管时，巧克力棒开始融化了。

2. Intrigued, Spencer placed popcorn kernels near the electronic tube, soon popcorn was popping out over the lab floor.  好奇之下， Spencer将爆米花谷粒放在电子管近旁，很快爆米花蹦得满地都是。

Step III  Post-reading

Ss try to finish Task 7.8 with the help of the teacher and learn to write a summary for a short passage.

巩固练习

Step IV  Additional exercises

《教与学》相关练习。

总结阶段

总结评价 Key phrases of the passage

1. let sb do sth

2. get close to 

3. generate high-frequency radio waves

拓展提升

1. Read the passage as much as possible and prepare for a dictation.

2. Finish the related exercises in Book《教与学》

板书设计

let sb do sth

get close to 

generate high-frequency radio waves

pop out over the lab floor