2019-2020年二年級上冊第四單元《求一個數(shù)的幾倍是多少》（信息窗3）參考教案.doc

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2019-2020年二年級上冊第四單元《求一個數(shù)的幾 倍是多少》（信息窗3）參考教案 教學(xué)目標： 1、結(jié)合具體情境，體驗求一個數(shù)的幾倍是多少的含義和作用。 2、探究求一個數(shù)的幾倍是多少的解題方法，能夠應(yīng)用“倍”的知識解決稍復(fù)雜的數(shù)學(xué)問題。 3、學(xué)會用數(shù)學(xué)的方法去觀察、發(fā)現(xiàn)，能夠解決生活中的數(shù)學(xué)問題，培養(yǎng)應(yīng)用意識。 教學(xué)重點： 會求一個數(shù)的幾倍是多少。 教學(xué)難點： 教學(xué)“倍”與乘、除法的聯(lián)系。 教學(xué)過程： 一、談話激趣，情境導(dǎo)入 同學(xué)們，凱蒂做了2個中國結(jié)，菲菲做的個數(shù)是凱蒂的3倍。菲菲做了多少個中國結(jié)？ 二、探究新知，提出問題 師：凱蒂做了2個中國結(jié)，可以表示為1個2，菲菲做的中國結(jié)的個數(shù)就是3個2。 師：怎樣求2的3倍呢？ 用學(xué)具代替中國結(jié)。 由擺學(xué)具可知求2的3倍是多少與求3個2是多少的意義是相同的，都可以用乘法計算。 求一個數(shù)的幾倍是多少，就是求幾個這樣的數(shù)是多少，用乘法計算。 23＝6，32＝6 三、全課小結(jié) 你這節(jié)課都有哪些收獲呀？ 限時作業(yè)： 自主練習6 畫一畫，填一填。 附送： 2019-2020年二年級下冊Module6Unit1Iusuallyp laybasketball表格式英文教案 Title NSE Book 4 Module 6 Unit 1 I usually play basketball. Aims 1. Get students to grasp a new dialogue and some new words 2.Talking with“usually” and “…ing” Focus 1.Key words: “usually, Sunday, help, it, thing, ill, him ”. 2. Help students grasp the key sentences: I usually help my father. But I’m not helping him today. Aids Radio, cards, picture, CAI Teaching Process Teacher’s Activity Students’ Activity Re-preparation ⅠWarming up and Revision 1.Say hello to students. 2.Sing a song ⅡLeading-in I usually listen to music, but I’m not listening to music today. Daming usually do many things. But he’s not doing them today. Why? Let’s listen and find. ⅢTeaching and Learning 1.Play the tape. 2.Ask some questions. On Sundays, Daming usually plays basketball/helps his father/rides his bike/does his homework. Is he playing/helping him/riding it/doing it today? Why? What’s he doing now? 3.Show the pictures and sentences. 4.Play the tape ⅣFurther Development . 1. Look and Fill blanks 2. Practice in pairs. ⅤHomework. 1. To all students:Make some sentences with”usually”and “-ing”,then draw them. 2. To a part of students: Make a dialogue and act it out. 1.Say“hello”to teacher 2.Sing and do the actions Listen carefully, then listen to the tape. 1.Listen and point 2 times. 2.Answer questions. No, he isn’t. He’s ill. He’s watching TV. 3.Look and say. 4.Listen and repeat 2 times. 1. Look and say. 2. Show a dialogue.