2020年三年級(jí)科學(xué)下冊(cè) 風(fēng)的觀測(cè)教案 大象版

2020年三年級(jí)科學(xué)下冊(cè) 風(fēng)的觀測(cè)教案 大象版一、設(shè)計(jì)思路本堂課由尋找風(fēng)的蹤跡開始，逐漸進(jìn)入判斷風(fēng)的方向。通過學(xué)生用自己的風(fēng)向標(biāo)測(cè)定風(fēng)向，初步知道測(cè)定風(fēng)向的方法。并能利用周圍事物的現(xiàn)象對(duì)風(fēng)向作出判斷，進(jìn)一步鞏固風(fēng)向的概念。第二步，通過吹紙風(fēng)車體驗(yàn)到風(fēng)是有力量的，風(fēng)的大小是可以測(cè)量的。第三步，通過學(xué)習(xí)書本上的風(fēng)力表，明白生活中人們對(duì)風(fēng)力的大小作了等級(jí)規(guī)定。然后，根據(jù)書上圖中的現(xiàn)象作出風(fēng)力大小的判斷，最后，到操場(chǎng)上對(duì)今天的風(fēng)力大小作出判斷，從而初步形成風(fēng)力大小的概念。二、教學(xué)目標(biāo): 1、用簡(jiǎn)單的方法測(cè)定風(fēng)向。2、感受風(fēng)的力量，設(shè)計(jì)制作簡(jiǎn)單的裝置測(cè)定風(fēng)力的大小。3、能初步判斷風(fēng)力的大小及等級(jí)。4、經(jīng)歷測(cè)定風(fēng)向和風(fēng)力的過程。三、教學(xué)重點(diǎn)：初步判斷風(fēng)向和風(fēng)力的大小。四、教學(xué)難點(diǎn)：根據(jù)觀察到的現(xiàn)象判斷風(fēng)向和風(fēng)力的等級(jí)。五、器材準(zhǔn)備：風(fēng)向標(biāo) 風(fēng)車材料。六、教學(xué)環(huán)節(jié)1、導(dǎo)入風(fēng)是什么樣子的？我們?cè)趺粗榔痫L(fēng)了？學(xué)生根據(jù)生活經(jīng)驗(yàn)回答。2、測(cè)定風(fēng)的方向（1）、和老師一起去操場(chǎng)尋找風(fēng)好嗎？一起到操場(chǎng)上尋找風(fēng)的蹤跡，并作好記錄。（2）、你有辦法知道吹的是什么風(fēng)向嗎？用自制的風(fēng)向標(biāo)測(cè)定風(fēng)向。在測(cè)定風(fēng)向的過程中有什么問題嗎？怎樣解決呢？學(xué)生提問題、討論問題、解決問題的方法。（2分鐘內(nèi)出現(xiàn)次數(shù)最多的風(fēng)向是當(dāng)時(shí)風(fēng)向）（3）、討論：旗幟、煙飄去的5和風(fēng)向有聯(lián)系嗎？請(qǐng)說一下吧。2、風(fēng)有力量（1）、同學(xué)們，我們能測(cè)風(fēng)向了，那么同風(fēng)向的風(fēng)一樣嗎？你有辦法知道風(fēng)的大小嗎？學(xué)生思考后回答。舉例說明風(fēng)是有力量的，力量是有大有小的。老師簡(jiǎn)介一下氣象站也有用風(fēng)杯的轉(zhuǎn)動(dòng)來測(cè)定風(fēng)力大小的方法。（2）、現(xiàn)在，我們照書上的方法制作一個(gè)紙風(fēng)車。學(xué)生按書本方法制作風(fēng)車。對(duì)風(fēng)車吹氣，仔細(xì)觀察，鈕扣有什么變化？這種變化和你吹的氣有關(guān)系嗎？學(xué)生吹風(fēng)車后思考、討論并把自己的看法說給全班聽。3、風(fēng)力的大?。?）、現(xiàn)在，我們知道風(fēng)是有力量的，有風(fēng)向的。誰能說一下電視、廣播里是怎樣報(bào)風(fēng)的情況的？學(xué)生回憶后發(fā)言。（2）、那么，你知道今天的風(fēng)是幾級(jí)嗎？依據(jù)是什么？一起來看看書上是怎么規(guī)定的？學(xué)生思考回答。仔細(xì)看書中的風(fēng)力等級(jí)表。大家來判斷一下書中的四幅圖里的風(fēng)是幾級(jí)？學(xué)生觀察后回答。（3）、我們?nèi)ゲ賵?chǎng)上觀察一下，今天是幾級(jí)風(fēng)？學(xué)生到操場(chǎng)觀察并記錄，回教室后對(duì)觀察記錄的結(jié)果進(jìn)行比較。附送：2020年三年級(jí)英語上冊(cè)Unit1Happybirthday!教案外研版 一、教學(xué)內(nèi)容： 單詞：happy, birthday, here, cake. 句型：Happy birthday! Here's your present. 二、教學(xué)目標(biāo)： （一）知識(shí)目標(biāo)： 1. 能聽會(huì)說：happy, birthday, here, cake. 2. 會(huì)用：Happy birthday! Thank you. 3. 會(huì)用：Here's your present! (二)能力目標(biāo)： 讓學(xué)生在教師設(shè)計(jì)的一系列任務(wù)中練習(xí)所學(xué)單詞，達(dá)到“活學(xué)活用”的目標(biāo)，培養(yǎng)學(xué)生在生活中使用英語的交際能力。 （三）素質(zhì)目標(biāo)： 培養(yǎng)學(xué)生認(rèn)真傾聽,仔細(xì)觀察,善于模仿和合作學(xué)習(xí)的精神。 （四）情感目標(biāo)： 讓學(xué)生在聽聽，說說，做做，唱唱等活動(dòng)中輕松學(xué)習(xí)英語，激發(fā)學(xué)生學(xué)習(xí)的興趣，幫助學(xué)生養(yǎng)成良好的學(xué)習(xí)習(xí)慣，形成有效的學(xué)習(xí)策略，使學(xué)生逐步獲得運(yùn)用英語的能力。 三、教學(xué)用具 多媒體，點(diǎn)讀筆，蛋糕，蠟燭，一個(gè)紙盒，幾支鋼筆，鉛筆，幾張動(dòng)物圖片。 四、教學(xué)過程 (一) Warm-up 1. Greeting T: Good morning, boys and girls! S: Good morning, Ms Zhou! T: How are you? S: I'm fine, thank you. And how are you? T: I'm fine, too. Thank you. 2. Sing the song “Ten little fingers.” 3. Game: Take out a box with some pencils, pens and pictures in it. Ask three students to touch the objects. Then the teacher asks “What's this?” They should answer “It's a/an ” (二) Present task 1. Show some pictures which are covered some parts on CAI. Let the students watch and guess “What's in each picture?” Then practice: T: What's this? S1: It's a pen. T: What's this? S2: It's a black cat. . 2. Show a picture of a birthday cake and ask “What's this?” The students can answer in Chinese “蛋糕” ,Then the teacher repeats “ It's a cake. It's a birthday cake.” Write “birthday and cake” on the blackboard, teach the two words several times. (三) Learn mew knowledge. 1. Tell the students “This birthday cake is for Huang Huilan and Huang Yalan. Today is their birthday.” Then ask “What should we say when somebody has a birthday?” Help the students say “Happy birthday!” Write the sentence on the blackboard and teach “happy” “Happy birthday!” 2. Tell the students when somebody says “Happy birthday to us, we should say thank you!” Write the sentence on the blackboard. 3. Let the students say “Happy birthday!” to the twins. Then the twins should answer “Thank you!” 4. Ask “What should we give when somebody has a birthday?” The students may answer in Chinese “禮物”，“Yes, present” Write “present” on the blackboard and teach it. Then say “We should give him/her a present, and say “Heres your presents.” Write this sentence on the blackboard. Say it again, students repeat several times. 5. Game “Lost and found” Collect some objects from the students, put them on the teacher's desk. Ask two or three students to be a keeper, and return the objects to the owners “Here's your pen/pencil/book ” The owners should answer “Thank you!” 6. SB. Activity One. Play the tape, ask the students to look and listen, then answer questions “Who is having a birthday? How old is Sam? What's Sam's present?” 7. Play the tape again. The students repeat. 四、Practice. 1. Ask the students to practice the text in pairs. Then ask some pairs to act it out. 2. Have a birthday party for the twins. 五、Finish the task. 1. AB Exercises 1, 2, 3, 4. 2. Learn the song “Happy birthday to you!” 3. Game: Share the cake. 六、Homework 1. Make a birthday card. Write some prays in English. 2. Review the new words and the drills. 附：板書設(shè)計(jì) Module 7 Unit 1 Happy birthday!A: Happy birthday!B: Thank you.A: Heres your presents.B: Thank you.