小學英語說課比賽
❶ 小學英語全英文說課稿
Good morning, everyone!
Today, I』ll say something about Unit 9 Part A in Book 4 of Oxford English.
Background on the reformation of curriculum, this book can connect the life and act, emphasize the interest and experience of the Ss, the pictures are active and vivid. Grade four is the initial stage of English learning, so it stresses on the emotion of the Ss, creates a well beginning for the Ss. This Unit has 7 parts, we』ll learn Part A mainly, it embodies the repeating characterize. Review the learned language points 「Where』s…」 the new language points will be represented in the following units. So this unit forms connecting links with a special meaning in this book.
The content of this period is to use 「Where』s\are…」 to determine the place. And according to the contents and the fact of the Ss, I establish the following three teaching aims of this period:
The first one: students can listen, read, say and spell the following words: a glass, a fridge, an egg, bread and a table.
The second one: students can listen, read, say and write the following daily expressions: What』s for breakfast?
Have some juice then.
The third one: students can listen, read, say and write the following sentence patterns: Where』s\Where are the\my…
It』s \They』re…
There』s no …in \on \near…
I think the most difficult point of this period is to make sure the students can use the patterns 「Where』s\Where are…and There is no …in\on\near…」 in their daily life correctly.
And I will use some pictures, words and sentence cards, a tape recorder and the multi-media computer to help me achieve the aims.
The task-based method, communicated method, group cooperate method will be used in this period.
To accomplish the aims, I design the following steps:
Step 1 Songs and the game arousers the emotion.
In order to attract the Ss』 attention and construct an atmosphere of learning English, I let the students sing some English songs and play the game 「Simon says」. At the same time the game can review the prep, serve the knowledge as foil and consist the appearance of the knowledge.
Step 2 Change class to life, happy to say.
The substance of language is communication and the environment of communication is life. So when I present the sentence pattern 「What』s for breakfast?」 I first show a clock to elicit the time for breakfast, teach the sentence. Then show my own photo of having breakfast, Ss ask and guess. In this way I can attract Ss』 attention, encourage Ss to ask Qs with the new knowledge.
Most of the Ss have learnt the sentence pattern: Where』s…? so I design a task for Ss to help Helen find the food and drinks for breakfast, and teach the new language points: Where are…? They』re … Meanwhile stick the sentences on the Bb.
After some practice by asking and answering, I present the next language points:
There』s no …in\on\near…
Have …then.
And I will stick these sentence patterns on the Bb. Finally I』ll let the Ss do pair works to consolidate them.
Step 3 Listen to the tape and Ss imitate to read and say.
As the new reformation of curriculum, emphasized the traditional class attach importance to the mechanical teaching, neglect the experience and participation, for example, the five-step method. So in this lesson, after presentation, I ask Ss to listen to the tape with three Qs, read in different roles and in pairs, then try to recite the text.
Step 4 Ss be the main body, T makes a guider.
In class, Ss play as a host, and the T makes an influence on guiding, help Ss to act the learnt dialogue, it can stress the position of the Ss, and arouse their interest.
Then I show a carton with no voice, ask Ss to make a dialogue in pairs.
There are lots of ways to consolidate the new knowledge. Playing game is a good way. So according to the physiology of Ss, I hold a group competition ring the game, ask Ss to finish the blanks. In this way can develop Ss』 good habits and achieve the aim of mastering the learned knowledge in situation.
Step 5 Change class to life, learn by themselves.
Is this the end of the class? I don』t think so. If there is an end, I think it should be in the life. So I extend this class, encourage Ss to use the learned to communicate with each other in their life.
In a word, the whole period is based on tasks, which are designed from easy steps to steps that are challenging. When the Ss are carting out the tasks, they can acquire information, knowledge, and have their ability and skills trained.
That』s all. Thanks a lot for your attention.
❷ 小學英語說課稿
呵呵你可以把年級什麼的改一下,希望能幫到你
Good afternoon , Ladies and Gentlemen !
My name is Wu Dan . I come from Yu Hong Primary School .I am very
glad to be standing here and talking about Lesson 10 ,which is from Fun with English Book 3 Unit 2 .
My teaching report includes four parts .
Part 1 To analyze the book
1.There are 3 units in Book 3 . This is Lesson 10 . The central item is how to master another sentence to express 「 What』 the time ? 」 and how to buy something. Using 「 What』s the time ? 」 hungry , cakes, bread and so on . We』ll study and drill the sentences and the word 』s pronunciation .
2. According to the teaching outline and combining the students 』 situation , I make the teaching aims of this lesson as follows .
a .The first is the aim of knowledge .
It』s to learn and master two sentences. What time is it? I am hungry and then using them to express the time and go shopping fluently and freely
b. The second is the aim of abilities
The creative spirit is quite important to the students. So I will pay much attention to train it in my class. Otherwise. I will try to train the students listening, speaking, reading and writing abilities, Mainly improve their communicative abilities and encourage them to speak more English.
C. The third is the aim of emotion
Make the students have successful feeling and achievement. And make them be in English study.
3.Important points
The first is to master and use the two sentences. What time is it? I』m hungry. The second is to master the usage of the words hungry, cakes and bread.
4.Difficult points.
It』s the pronunciation of the two words. hungry, cakes, and how to use them fluently and freely .
Part 2 . Teaching and learning methods
Make the students take part in class . Ask and answer in pairs and groups . I』ll use communicative method , discussing method and seeing and hearing method to teach this lesson .
Part 3 . Teaching aids .
In order to interest the students . I』ll use a clock , recorder , cards and some food as my teaching aids .
Part 4 . Teaching procere .
Step 1 Revision
Before my class , I』ll get the students to sing an English song to keep themselves relax . Then I』ll use a clock to act it . What』s the time ? What』s the time ? It』s eight o』clock . I』ll show three numbers . When the students answer It』s ten o』clock . I』ll say : It』s ten . Today we』ll learn Lesson Ten . Then I'll put the clock on the blackboard .
Step 2 Presentation and drill
First I』ll point to the clock and ask , what time is it ? Students answer It』s ten . Then I go on moving the hands and ask .What time is it ?Students answer quickly .
Second I』ll drill the sentences What time is it ? It』s ----- .pairs in pairs or row by row .
Third When the students answer It』s 12:00 o』clock . I』ll point to my stomach and say .Oh I』m hungry .and I』ll eat a cake . Then I』ll go on saying I』m hungry .and I』ll eat another cake . I』ll act it four or five times . Then I ask a student to act it . I』m hungry , too . I』ll say two cakes , please .and the sentences .I』m hungry . Two cakes ,please.
Forth :Listen to the dialogue and answer my questions.
1.What time is it?
2.How many cakes?
Step 3 Consolidation
I』ll train the creative spirit of the students.
I』ll give them three please. To act the dialogue freely .First at the 219 Park,second fruit shop Third department store.
Step4.Homework
Encourage my student to the market to buy something with his friends or parent
Background of English teaching in primary school: It is not a long history that English is as a subject in primary school in our country and the main instructional aims of teaching English in primary school is to cultivate pupils』 basic abilities of their listening and speaking and their good sense of the English language. Our boys and girls are exposed to English for the first time, so it is very important to develop their keen interest in English.
I. Contents:
Today I』m going to talk about Part B of Unit 2, PEP Primary English, Book 3. This lesson includes two parts: Let』s talk and let』s practice. In section 1, it mainly deals with the dialogue about 「What』s in the schoolbag?」 and the answers. And in section 2, it provides a real situation for the Ss to prastise the pattern: How many +n.(pl.)+ do you have? And the answer: I have 23 +n.(pl.)
II. Teaching aims
1. Aims on the knowledge
(1) To enable the Ss to understand and speak: 「My schoo lbag is heavy. What』s in it? Thank you sooooooo much.」 Make sure that Ss can use these sentences in real situations.
(2) To help Ss to finish the survey.
(3) Let Ss finish the assessment of 「Let』s check」 in this unit.
2. Aims on the abilities
(1) To develop Ss』 abilities of listening and speaking.
(2) To train the Ss』 ability of working in groups.
(3) To foster Ss』 abilities of communication and their innovation.
3. Aims on the emotion
(1)To foster Ss』 consciousness of good co-operation and proper competition.
(2) To lead Ss to show their loveliness to the poor.
III. Key-points of this lesson
(1) To help Ss ask and answer the question: What』s in it?
(2) To enable Ss to study in groups and co-operate skillfully.
(3) To develop Ss』 interest in English.
IV. Difficult points
(1) To help the Ss ask and answer the question 「What』s in it?」 and make sure they can use the plural nouns cor rectly.
(2) To finish the survey by themselves.
V. Teaching methods
As we all know: the main instructional aims of learning English in primary school is to cultivate pupils』 basic abilities of listening and speaking and their good sense of the English language. So in this lesson I』ll mainly use 「Task-based」 teaching method. That is to say, I will let the Ss learn in real situations, finish a task by making a survey to help the Ss to get a better understanding of the key structure of the dialogue. I will arrange four kinds of activities: singing, guessing game, finishing a survey and having a competition. And in this lesson a recorder, CAI, school things and a printed form will be needed. Students should prepare some school things.
VI. Teaching proceres and purposes of my designing.
I』ll finish this lesson in five steps.
Step 1. Warm-up and preview
1. Free talk between T and Ss about things in the classroom.
2. Sing the song together: Books and pencils.
3. Do some TPR, for example: Show me your English book. Show me your crayon.
4. Review the numbers by asking: 「How many crayons do you have?」
Purpose: It is important to form a better English learning surrounding for the Ss by singing and doing some total physical response and at the same time it provides situations to review learned knowledge for the next step.
Step 2. Presentation
Now I』ll mainly talk about this step.
1. Present the pattern: 「My schoolbag is heavy.」 「What』s in it?.」
(1) Show a bag and say: 「Look! I have a bag.」 Carry it and say: 「Oh, it is heavy. My schoolbag is heavy.」 Help the Ss understand the meaning with the help of my body language. Then lead the Ss to read the sentence. Make sure they can say it correctly.
(2) T: My schoolbag is heavy.
Open the bag and say: 「What』s in it? What』s in my schoolbag?」
Take out a Chinese book. Then do the action again. Let the S s read the sentence.
2. Play a guessing game. Divide the whole class into four groups to have a competition.
Let them guess: What』s in the bag? How many? Purpose: To present the key structures one by one is much easier for the Ss to learn and grasp the meanings. Proper competition can arouse the Ss』 interest in English learning.
3. With the help of the CAI to present the dialogue. Set a situation to help Ss understand: Two Ss are coming. One girl is carrying a heavy bag on her back. They are talking.
Girl: My schoolbag is heavy.
Boy: What』s in it?
Girl: 20 story-books, 32 pencil, 9 rulers, 12 crayons and 30 picture-books. Etc.
Boy: What will you do?
Girl: They are for the poor.
Boy: Great! I』ll bring some school things too.
The boy comes back home and puts a lot of things into the bag. Then he goes to school again and gives them to a teacher. While he is taking them out, he is counting the numbers of all things. T he teacher says: Thank you soooooooo much.
4. Mention that we should take care of the poor.
5. Play the cassette. Let the Ss listen and imitate the dialogue.
Pay attention to their pronunciation and intonation. Purpose: CAI can provide a real situation for the Ss to understand the dialogue and the relationships between people better. Tell the Ss we should show our loveliness to the Ss.
Step 3. Practice
Divide Ss into groups of six children. Each one would finish the printed form by asking and answering: How many storybooks do you have? Find out which group finishes faster. Story books picture-books sharpeners crayons pencils erasers pencil-cases rulers Chen Jie 8 24 3 32 26 4 1 3 Purpose: Task-based teaching method is used here to develop Ss』 ability of communication and also their ability of co-operation will be well trained.
Step 4. Assessment
Help Ss finish 「Let』s check」 of this unit and workbook.
Purpose: To check the k nowledge Ss have learned in this period.
Step 5. Add-activity
1. Let Ss tell each other how many school things they have after class. Tell their parents how many school things they have at home.
2. Take care of everything they have.
Purpose: Revision is so important that Ss should speak English as much as they as in class or after class. It is necessary for the Ss to do some extensive exercises after class to consolidate the knowledge they learned.
By: Ma
❸ 怎樣寫小學英語說課稿(全英文的)
本課重點圍繞學生對幾種體育運動是否喜愛這個題材開展多種教學活動,通過學習句型 I like …\I don't like …,讓學生能夠用英語表達出自己的思想和感受。它是整個模塊的重點,佔有很重要的地位,它為後兩個單元的學習奠定了基礎。
2.教學目標
知識目標:學習掌握單詞 football. basketball. table tennis. morning exercise,學習運用句型 I like …\I don't like …。
能力目標:培養學生運用英語的能力。
德育目標:教育學生熱愛體育運動,勤於體育鍛煉。
確立教學目標的依據:根據《英語新課程標准》的要求,小學階段的英語課主要是激發學生學習英語的興趣;培養學生對英語學習的積極態度,使他們建立學習英語的自信心;培養學生一定的語感和良好的語音、語調,為英語的進一步學習打下基礎。
3.教學的重點與難點
教學重點:能聽說單詞 football. basketball. table tennis. morning exercise,運用句型 I like …\I don't like …。
教學難點:靈活運用句型 I like …\I don't like …。
確立教學重難點的依據:根據《英語新課程標准》的要求以及本課在教材中所處的地位和作用。
❹ 小學英語說課比賽用英語說好嗎
既然是說課比賽,當然評委都是小學英語教學上的高手,你是怕用英語說他版聽不懂嗎?權可能有的家長不知道,現在的小學英語課老師課堂上都是用的英語進行教學,並不是大家想像的中英文交叉進行。您要是沒有一些英語基礎,您是聽不懂的。不信回去可問問孩子。聽您的口氣,您是新教師嗎?說課和教案或者備課是不同的。分為幾個部分,如:教學目標、重點難點、教材分析、教學准備、教學方法、教學過程、練習等幾個步驟。希望能給您幫助。如果有問題再聯系。
❺ 小學英語說課是不要全英文的還是說中英文都可以
小學英語說課如果是參加一些重要的比賽,建議用全英文。如果就是一般的教研課,那就中英文結合。小學英語說課全英版和中英文結合版附後:
小學英語說課全英版
Good morning , Ladies and Gentlemen !
My name is XXX . I come from XXX School .I am very glad tobe standing here and talking about Lesson 10 ,which is from Fun with English Book 3 Unit 2 .
My teaching report includes four parts .
Part 1 To analyze thebook
1.There are 3units in Book 3 . This is Lesson 10 . The central item is how to master another sentence to express 「 What』s the time ? 」 and how to buy something. Using 「 What』s the time? 」 hungry , cakes, bread and so on . We』ll study and drill the sentences and the word 』s pronunciation .
2. According tothe teaching outline and combining the students 』 situation , I make theteaching aims of this lesson as follows .
a .The first isthe aim of knowledge .
It』s to learnand master two sentences. What time is it? I am hungry and then using them toexpress the time and go shopping fluently and freely
b. The secondis the aim of abilities
The creativespirit is quite important to the students. So I will pay much attention totrain it in my class. Otherwise. I will try to train the students listening,speaking, reading and writing abilities, Mainly improve their communicativeabilities and encourage them to speak more English.
C. The third isthe aim of emotion
Make thestudents have successful feeling and achievement. And make them be in Englishstudy.
3.Important points
The first is tomaster and use the two sentences. What time is it? I』m hungry. The second is tomaster the usage of the words hungry, cakes and bread.
4.Difficult points.
It』s thepronunciation of the two words. hungry, cakes, and how to use them fluently andfreely .
Part 2 .Teaching and learning methods
Make thestudents take part in class . Ask and answer in pairs and groups . I』ll usecommunicative method , discussing method and seeing and hearing method to teachthis lesson .
Part 3 .Teaching aids .
In order tointerest the students . I』ll use a clock , recorder , cards and some food as myteaching aids .
Part 4 .Teaching procere .
Step 1 Revision
Before my class, I』ll get the students to sing an English song to keep themselves relax . ThenI』ll use a clock to act it . What』s the time ? What』s the time ? It』s eighto』clock . I』ll show three numbers . When the students answer It』s ten o』clock .I』ll say : It』s ten . Today we』ll learn Lesson Ten . Then I'll put theclock on the blackboard .
Step 2 Presentation anddrill
First I』ll point to the clock and ask , what time is it ? Students answer It』s ten . ThenI go on moving the hands and ask .What time is it ?Students answer quickly .
Second I』lldrill the sentences What time is it ? It』s ----- .pairs in pairs or row byrow .
Third When thestudents answer It』s 12:00 o』clock . I』ll point to my stomach and say .Oh I』mhungry .and I』ll eat a cake . Then I』ll go on saying I』m hungry .and I』lleat another cake . I』ll act it four or five times . Then I ask a student to actit . I』m hungry , too . I』ll say two cakes , please .and the sentences .I』mhungry . Two cakes ,please.
Forth :Listen to the dialogue and answer my questions.
1.What time isit?
2.How manycakes?
Step 3 Consolidation
I』ll train thecreative spirit of the students.
I』ll give themthree please. To act the dialogue freely .First at the 219 Park,second fruitshop Third department store.
Step4.Homework
Encourage mystudent to the market to buy something with his friends or parents.
How are you說課稿
一、 說教學內容
我說課的內容是 How are you? 第一課時,Let』s talk中的前四個情景。本節課是對話課,對話課是單元整體教學的重要環節。本課的重點交際用語是「How are you?」及其答語。
二、說教材
本節課是對話教學。通過小熊早上出去,遇見長輩一個個問好,引入話題,先短後長,不僅出現了各種答語,還復習了以前學過的問候語。對兒童有文明禮貌的教育意義。
三、說教學目標
《英語課程標准》指出:激發和培養學生學習英語的興趣,使學生樹立自信心,養成良好的學習習慣和形成有效的學習策略,發展學生自主學習的能力和合作精神是小學英語教學的基本任務。
在認真分析教材的基礎上,我針對學生實際,將本課時的教學目標及重,難點確定如下:
1、知識目標
(1) 使學生能認讀單詞:fine, OK, bird, pig, fox, hen
(2) 使學生掌握與熟人打招呼的句型: How are you?
I』m fine. I』m OK.
Thank you. And you?
2語言技能目標:
在圖文或場景下進行簡單的英語交流和表演, 培養學生靈活運用所學知識進行交流的能力.
3、情感態度目標
通過本課學習使學生有興趣聽、說英語,背歌謠,做游戲,敢於開口,樂於模仿,在鼓勵性評價中樹立自信心。在小組活動中積極參與合作,從而意識到交流對學習英語的重要性。
4、文化意識目標:
能夠恰當使用英語中與人問好的問候語,了解在英語國家中熟人見面相互打招呼的方式。對學生進行日常行為禮貌教育。
四、 說教學重點
見面問好的句型:How are you? 和他的各種回答方法由簡單的回答到復雜的回答及反問
五、 說教學難點
(1)How are you? 與How do you do? Nice to meet you. 等問候語的用法區別。
(2)培養學生合作學習的能力.同時注意培養學生學習英語的興趣, 樹立自信心。
六、說教學准備
教師准備課件、各種動物頭飾、錄音機、磁帶、小紅花及小組評價表。
七、說教法、學法
(1) 小組活動學習法
把全班分成5個小組,事先用表示動物名稱的單詞命名,課堂各項活動均以小組活動為主線,結對或全班活動為輔,學生相互交流,共同完成學習任務,在合作中感受學習英語的樂趣及交流的意義,也通過小組成員之間「榮辱與共」的關系而形成同步學習的環境。
(2) 情景教學法
我將准備一位助教(最好是一名外教),在導入新課時,助教走進教室與進行我對話到入新課,並與學生進行對話,設置真實而有效的場景激發學生想說的願望,有利於學生表達能力的提高。
(3)鼓勵教學法
課堂評價主要以鼓勵性評價為主,課上老師恰當的使用激勵性評語和贈送小禮物的方式讓學生渴望成功的心理得到滿足。這也是激勵學生積極投身學習的一個最簡單而有效的方法。
八、 說教學過程
整個教學程序我採用聽、說、玩、演、唱一系列的教學活動,具體設計為:
課前熱身—— 導入新知識——練習—— 鞏固補充——課堂小結——家庭作業
Step 1課前熱身
(1) 歌曲導入,激發學生學習的興趣
教育家托爾斯泰說過:「成功的教學所必須的不是強制,而是激發學生的興趣.」興趣是推動學生學習的強大動力,是學生參與教學活動的基礎。激發學生參與學習的興趣,是新課導入的關鍵。精彩的課堂開頭,往往給學生帶來新意、親切的感覺,不僅能使學生迅速地興奮起來,而且還會使學生把學習當成一種自我需要,自然地進入學習新知的情景。
因此,在熱身的時候,首先讓學生演唱歌曲:「The Hello Song 」,這樣的導入能很快吸引住學生,同時還渲染了學生學習英語的良好氣氛。
(2) 自由會話,促進語言實際運用能力的提高
本課的重點交際用語是「How are you?」及其答語。因此,在自由會話環節應選擇常用問候語。Hi! Hello! Good morning! Nice to meet you!等常用問候語進行對話。
不僅復習了舊知識,還渲染了學習英語的良好氣氛。
再會話中我採用「猜猜他是誰」的游戲方式。首先,選一名學生上來,捂上他的眼睛,然後選下面一名學生向他問好,在讓那名同學下來尋找並回答,然後讓提問的學生在猜。游戲結束進行點評,對猜對的學生獎勵一朵紅花
Step 2導入新知識
(1)這也是本課的特色所在,這時助教(最好是一名外教)敲門進入教室,向我問好「How are you?」我回答「I』m fine. Thank you.And you?」她在說「I』m fine,too.」 這時我向大家介紹「She is my best friend. Milly」 Milly說「Good morning, Children.」 學生回答「Good morning, Milly.」然後Milly用「How do you do?」向大家問好。這時我向學生解釋How do
you do?的意思是初次見面你好嗎?並告訴學生也要用How do you do?來回答。讓學生和Milly反復練習,練習時採用全班對話和個人對話兩種方式。練習結束後,引導學生回憶剛才我怎樣和Milly見面問好的,是否是用How do you do?若不是,提示學生引出How are you?並講解How are you?用於熟人見面打招呼,這一點區分於How do you do?而且回答方法也不同,應用I』m fine. Thank you.或 I』m OK. Thank you.來回答。此時Milly與大家已經熟悉,讓學生用How are you?來向Milly問好,並進性反復練習。
(2)告訴學生今天我們要認識一位有禮貌的小朋友little bear,然後用課件導入小熊分別遇到鳥夫人、豬先生、狐狸小姐和母雞夫人的圖片並介紹介紹「Look! This is a little bear. This is Mrs. Bird. This is Mr. Pig. This is Miss Fox. This is Mrs. Hen. Now please listen.」(同時板書)然後放錄音兩遍,讓學生進行思考然後猜測對話的意思,這時不進行講解,這樣做可以提高學生自我探索發現的積極性,接著我帶上頭飾充當小熊Milly帶上頭飾充當其他動物進行對話 「Hi! Mrs. Bird. How are you?」 「I』m fine.」 「Hi! Mr. pig. How are you?」 「I』m OK.」「 Good morning, Miss Fox. How are you?」 「Fine, thank you.」 「Hi! Mrs. Hen. How are you?」「I』m OK. Thank you. And you?」 「I』m fine,too.」這樣表演兩遍,再對How are you?fine、 OK、And you進行講解。然後在讓學生聽兩邊錄音,並讓學生逐句跟讀翻譯翻譯。
Step 3練習
讓學生逐句跟讀幾遍後,把分好的小組,第一組擔任小熊角色,二組擔任鳥夫人,三組擔任豬先生。進行成組操練。再讓學生同桌自由對話2分鍾。每組各派一個代表擔任本組角色上台表演,然後讓Milly評比出表演自然,發音標準的演員進行小組獎勵,同時還要對各組代表進行獎勵。這樣反復練習兩次。
Step 4鞏固補充
(1) 作出一個chant
Hello, Hello, How are you?
Hello, Hello, How are you?
I』m fine. Thank you.
Hello, Hello, How are you?
Hello, Hello, How are you?
I』m OK. Thank you.
(2) 在給學生看一些不同動物見面問好的圖片,然後讓學生自己創編並表演對話。
Step 5 課堂小結
總結小組評價表,學生掌聲祝賀並鼓勵獲獎小組下節課繼續努力,為激活下節課打了基礎。
Step 6家庭作業
聽錄音,做活動手冊(活動手冊是一個常規練習,其目的在於全方位的、及時檢測學生對本課時知識掌握的程度)
九、教學總結
這節課不論是新知識的呈現,還是游戲的設計,都能緊緊地抓住學生,吸引學生,讓學生積極參與到課堂中來。學生在玩中學,學中用,提高了課堂實效,培養了學生學習的興趣。我相信通過這樣的教學,充分讓學生主體參與、體驗感悟、游戲鞏固,是一定能圓滿實現課堂教學任務的。