2019-2020年二年级上册第四单元《求一个数的几倍是多少》（信息窗3）参考教案.doc

2019-2020年二年级上册第四单元求一个数的几倍是多少（信息窗3）参考教案教学目标：1、结合具体情境，体验求一个数的几倍是多少的含义和作用。2、探究求一个数的几倍是多少的解题方法，能够应用“倍”的知识解决稍复杂的数学问题。3、学会用数学的方法去观察、发现，能够解决生活中的数学问题，培养应用意识。教学重点：会求一个数的几倍是多少。教学难点：教学“倍”与乘、除法的联系。教学过程：一、谈话激趣，情境导入同学们，凯蒂做了2个中国结，菲菲做的个数是凯蒂的3倍。菲菲做了多少个中国结？二、探究新知，提出问题师：凯蒂做了2个中国结，可以表示为1个2，菲菲做的中国结的个数就是3个2。师：怎样求2的3倍呢？用学具代替中国结。由摆学具可知求2的3倍是多少与求3个2是多少的意义是相同的，都可以用乘法计算。求一个数的几倍是多少，就是求几个这样的数是多少，用乘法计算。236，326三、全课小结你这节课都有哪些收获呀？ 限时作业：自主练习6画一画，填一填。附送：2019-2020年二年级下册Module6Unit1Iusuallyplaybasketball表格式英文教案TitleNSE Book 4 Module 6 Unit 1 I usually play basketball.Aims1. Get students to grasp a new dialogue and some new words2.Talking with“usually” and “ing”Focus1.Key words: “usually, Sunday, help, it, thing, ill, him ”.2. Help students grasp the key sentences: I usually help my father. But Im not helping him today.AidsRadio, cards, picture, CAITeaching ProcessTeachers ActivityStudents ActivityRe-preparationWarming up and Revision1.Say hello to students.2.Sing a songLeading-in I usually listen to music, but Im not listening to music today. Daming usually do many things. But hes not doing them today. Why? Lets listen and find.Teaching and Learning1.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? Whats he doing now?3.Show the pictures and sentences. 4.Play the tapeFurther Development .1. Look and Fill blanks2. Practice in pairs.Homework.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 teacher2.Sing and do the actionsListen carefully, then listen to the tape.1.Listen and point 2 times.2.Answer questions.No, he isnt. Hes ill.Hes watching TV.3.Look and s