Unit 6 When was it invented? SectionB（1a-1e）教案

Unit6 SectionB（1a-1e）
教学目标
【知识目标】
Important words：sour，crispy，salty，customer
Important sentences：
1．—Did you know potato chips were invented by mistake？—Wow，I didn't know that.Who invented them
2．The customer thought the potatoes were not thin enough.
3．Finally he put lots of salt on them so they were salty enough.
【能力目标】
能够通过听、说学习与食物有关的词汇。
【情感目标】
让学生通过阅读理解如何用一般过去时的被动语态描述发明史。
教学难点
重点：重点单词及短文：sour，by mistake，cook，。
难点：学会用一般过去时的被动语态对更广泛的发明进行描述。
教学过程
Lead-in
Life is full of delicious food!
How do they taste
They taste sour.
They taste sweet.
1a
Fill in the blanks with words in the box.
1b
Write the name of a different food after each word.
sweet _______________________
crispy _______________________
salty ________________________
sour ________________________
The History of Potato Chips
The story was back in1853.One day,a customer came into the restanrant where Geoge worked,
he ordered (订购) a plate of fried(油炸的) potatoes.But he said they were too thick and sent them back to the kitchen.Geoge was angry,so he cut the potatoes really thin,and he cooked them for a long time until they were crispy.And he put lots of salt on them so they were really salty.The customer loved them and told the others，and soon everyone was ordering them.
LISTEN AND CIRCLE “T” OR “F”.
1. The potato chips were invented by mistake.
2. They were invented in 1863.
3. The customer thought the potatoes weren’t thin enough.
4. The customer said they weren’t salty enough.
5. George wanted to make the customer happy.
6. The customer was happy in the end.
Listen again and complete the sentences.
The history of chips
_____________ that potato chips were invented by mistakes Chips _____________ by a chef called George Crum. They were invented in ______ .George Crum cooked them for a long time until they ___________ . And he sprinkled lots of salt on them so they were ___________.
1c
Listen and circle T for true or F for false.
1d
Listen again. Complete the sentence.
Group work
Retell the story about the invention of potato chips in group of four. Use the information in 1c and 1d.
PAIRWORK
Role play the conversation about the invention of the potato chip.
Model
A: Did you know potato chips were invented by mistake
B: Wow, I didn’t know that. Who invented them
A: …
A:Do you know potato chips were invented by accident
B: Wow, I didn’t know that. Who invented them
A: George Crum did. It was invented by a cook.
B: How did he invent them A: …
B: Why did he do it like that A: …
巩固练习
同学们做Exercises
thank you