本節(jié)課總目標(biāo)描述
通過本節(jié)課的學(xué)習(xí)學(xué)生能掌握以下基本句型：How often do you brush your teeth? I brush my teeth twice a day. 本節(jié)課的總體設(shè)計體現(xiàn)了新課程標(biāo)準(zhǔn)中的從學(xué)生的學(xué)習(xí)興趣、生活體驗和認(rèn)知水平出發(fā)，倡導(dǎo)體驗、實踐、參與、合作與交流的學(xué)習(xí)方式和任務(wù)型的教學(xué)途徑的教學(xué)理念。
預(yù)想的效果是：學(xué)生感受到課堂45分鐘大多數(shù)時間是在做一件有意義而且較為感興趣的事，這種愉悅的心情促使學(xué)生自主、創(chuàng)造性地完成任務(wù)，即培養(yǎng)了學(xué)生運(yùn)用英語進(jìn)行實際交際的能力。這種體驗和感悟是新課程標(biāo)準(zhǔn)的基本要求。
教學(xué)重點和難點：合理運(yùn)用本單元句型進(jìn)行交際；
熟練使用頻率的表達(dá)方式。
Lead in: let students pay attention to the importance of brushing teeth.
Task 1: How often do you brush your teeth?
Task 2: How do you protect your teeth?
Task 3: Who is the best teeth protector?
Lead-in 由小實驗導(dǎo)入我們應(yīng)愛護(hù)我們的牙齒。
This experiment simulates the protection power of Fluoride.
What you’ll need:
1 bottle of Fluoride rinse solution (available from your dentist, local dental supply company and some pharmacies)
2 eggs 1 bottle of white vinegar 3 containers
What to do:
Pour four inches of Fluoride rinse solution into one of the containers and then place an egg in the solution. Let it sit for five minutes. Remove the egg. Pour four inches of vinegar into each of the remaining two containers. Put the egg that has been treated with the Fluoride into one container of vinegar and the untreated egg in the other container of vinegar.
What will happen:
One egg will start to bubble as the vinegar (an acid) starts to attack the minerals in the egg shell. Which egg do you think will start to bubble?
2. 學(xué)生仔細(xì)的觀察試驗的結(jié)果。通過試驗讓學(xué)生意識到保護(hù)牙齒的重要性
3. 由學(xué)生brainstorm保護(hù)牙齒的正確的方法。并發(fā)給學(xué)生表格在小組內(nèi)對小組的成員進(jìn)行問卷調(diào)查。
How often do you brush your teeth?
Seldom
Once a day
Two times a day
After each meal
How long do you brush your teeth?
30 seconds
1 minute
2 minutes
Longer than 2 minutes
What type of tooth-brush do you use?
I don't know
Medium
Soft-bristled
Extra soft-bristled
Do you use toothpaste with fluorine?
No
Yes
How often do you eat sweets?
Many times a day
Twice a day
Once a day
Once a week
How often do you see your dentist for a preventive check-up?
Never
Once in several years
Once a year
Twice a year
How often do you change your toothbrush?
Yearly
Every 3-4 months
Every 6 months
How often do you floss between your teeth?
Never
Occasionally
Daily
4. 小組內(nèi)調(diào)查并做完報告后，小組內(nèi)討論什么是正確保護(hù)牙齒的方法， 并選出最講究牙齒衛(wèi)生的標(biāo)兵。
5. 擴(kuò)展話題：
How often do you cut your hair?
How often do you cut your nails?
How often do you wash your hands?
How often do you wash your hair?
How often do you change your underwear?
How often do your have a body check?
教案點評：
本節(jié)課的設(shè)計與學(xué)生的日常生活緊密相連，所以任務(wù)的設(shè)計具有真實性。
首先由一個小的實驗引入本課，這樣可以引起學(xué)生的興趣，并能幫助學(xué)生意識到保護(hù)牙齒的重要性。并能讓學(xué)生的注意力馬上集中到課上來。第二步，通過pair work讓學(xué)生互相了解彼此的刷牙習(xí)慣并比較有什么不同。第三步，讓學(xué)生小組討論出什么是保護(hù)牙齒的正確方法。 并通過問卷的形式，在小組內(nèi)評選出保護(hù)牙齒的小衛(wèi)士。
通過本節(jié)課的學(xué)習(xí)學(xué)生應(yīng)用所學(xué)的句型解決生活中實際的問題。并向?qū)W生介紹中西文化關(guān)于牙齒保護(hù)的不同。