1、Unit 6 When was it invented ? Section B (1a-1e) Teaching aims 1. Ask the students to master the following words :crispy, salty,sour,by mistake,customer . 2. Talk about the history of potato chips. Teaching important points Talk about the history of potato chips. Teaching difficult points Talk about
2、the history of potato chips Teaching steps Step 1Learning the new words :crispy,salty, sour,by mistake,customer First ask the students to listen to them. Then read them aloud .Finally recite the new words .The teacher check them . Step 21a Look at the picture and say how food can taste .Write them u
3、nder the correct pictures .Some pictures have more than one word . Potati chips cristy ,saltyice cream sweet Lemon soursalted eggs salty Ask the students to read and memorize them . Step 31b Write the name of a different food after each word . Ask the students to talk about them and share their answ
4、ers with otner students . Sweet banana ,watermelon Cristy fried chicken, potato chips Salty cheese ,salted eggs ,salt Sourlemon ,vinegar Step 4:1clistening Listenand circle T for true or F for false .translate the sentences into Chinese to understandtheir meaning . Explain the important phrases . 1.
5、 by mistake2.be not thin enough 3. be not salty enough4.in the end 5. make the customer happy Ask the students to read and memorize them . Then listen to the tape . Check the answers ;TFTFF Step 5: Listen to1d . Do you rememberwhat they heard ?Can they guess theanswers based on what they know andfil
6、l the blanks ? Play the reading again and ask them to check their answers . Answers are ：were invented ,1853 , thin , crispy ,really salty . Ask thestudents to say the history of potato chips and act it out in front of the class . Step 6:Practicingin pairs。 Make a conversation about the invention of
7、 potato chips .Use the information in 1c and 1d . A:Did you knowpotato chips were invented by mistake ? B:Wow ,I didnot know that .Who invented them A:Acook calledGeorge Crum . B: When were they invented ? A: 1853 . 板书设计板书设计： Unit 6When was it invented ? Thehistory of potato chips 1. Who inventedthem ? 2. When were they invented ? 3. Howwere they invented? 教后反思
