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单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,*,连加,原来有 只小鸡，,5,2,你看到了什么？能提出一个数学问题吗？,来了 只小鸡。,一共有几只小鸡？,5,2,5,2,1,你又看到了什么？能提出一个数学问题吗？,来了 只小鸡,，,5,2,原来有 只小鸡，,又来了 只小鸡。,一共有几只小鸡？,1,一共有几只小鸡？,5,2,一共有几只小鸡？,5,2,1,对 比,5,2,1,7,8,你们会计算这个算式吗？,填一填。,1,8,先说一说图的意思，,再填一填。,7,4,2,9,7,3,1,10,9,基本练习,1,4,5,3,1,4,3,5,5,8,5,8,5,9,9,6,10,10,3,6,6,8,9,10,8,8,10,连减,4+2+4=,复习旧知,口算,10,3+3+1=,5+0+3=,3+2+1=,1+3+1=,2+3+4=,8,9,5,6,7,9,大数减小数,2,7,3,5,6,4,8,10,7,9,0,4,4,2,7,还剩几只小鸡？,8,2,2,先说一说图的意思，,再提出一个数学问题，并解答。,原来有 只小鸡，,走了 只小鸡，,又走了 只小鸡。,8,2,2,你们会计算这个算式吗？,8,2,2,6,4,填一填。,5,2,先说一说图的意思，,再填一填。,7,2,2,4,1,6,7,2,元,字帖,3,元,1,元,1,元,4,元,老师有,10,元钱，想买三件东西，可以买哪三件？,0,2,1,3,2,0,0,0,1,5,4,5,+,2,+,1,=,8,7,7,想一想,9,只,？,怎么算？,9,4,-,-,2,=,3,5,先摆一摆, 再填数.,4 + 3 + ( ) = ( ),?,1,8,10 - ( ) - ( ) = ( ),3,2,5,练一练,10,+,3,+,5,=,2,?,10 - 3 - 3 =,4,？,比一比,看,谁,算,得,又,对,又,快,10,0,8,2,1,9,10,6,9,7+2+1=,9-6-3=,3+3+2=,10-6-2=,10-4-5=,8+1+0=,4+2+4=,9-0-3=,0+2+7=,10-5-2=,3,加减混合,一、复习旧知,怎样计算连加连减？,按从左到右的顺序来计算。,1.,想一想,一、复习旧知,2.,算一算,8,2,3,3,2,1,5,3,2,？,10,5,3,5,3,2,10,5,3,？,二、探究新知,4,3,7,二、探究新知,4,3,7,=5,2,二、探究新知,4,2,2,二、探究新知,4,2,3,2,5,小结：,加减混合的运算顺序,:,从左到右计算，,就是加号在前先做加法，减号在前先做减法,从图中你知道了什么？,你能提出一个问题吗？,三、知识运用,做一做,池塘里原来有,6,只小鸭，来了,3,只，又走了,4,只，现在池塘里有几只小鸭？,6,3,4,9,5,算一算。,5+2-3=,7,4,7-2+3=,5,8,4-1+5=,3,8,2+3-4=,5,1,3+6-5=,9,4,10-3+0=,7,7,小动物开锁,解决问题,7 3 + 4 = 8,-,=,+,5,3,2,6,6,+,2,3,-,8,=,5,6,=,7,2,-,3,+,做一做,:,4,做一做,7,3,-,4,+,4,=,8,6,5,5,8,6,4,7,+,6,4,-,5,+,2,=,7,横行、竖行上的三个数相加，各得多少？,练习,一、做一做,6,5,5,8,2 + 6 3=,7 3 + 4=,8, 4 + 2=,4 + 5, 4=,8,4,4,9,二、看图写式,（ ） （ ） （ ）,=,6,3,4,7,+,看谁做得快！,10-4+2=,2+6+1=,8- 3- 5=,4+2+1=,7- 2+ 4=,6- 3- 1=,9- 2- 1=,3+2-4=,6+3- 3=,8,9,0,7,9,2,6,1,6,谢谢！祝生活愉快,I. Listen and number.（根据你听到的内容给下面的图片排列顺序）,1. -Good morning!,-Good morning!,2. -Lets make a puppet.,- Great!,3. How are you, Chen Jie?,- Fine, thank you.,4. Lets go to school!,- OK!,5. How are you, John?,- Very well. Thanks.,6. Hello, hello! How are you?,II. Listen and tick.(根据听到的内容，判断与图片所表达的意思是否一致),1. Open your eyes.,2. Close your mouth.,3. Touch your nose.,4. Touch your mouth.,5. Touch your face.,6. Clap your hands.,7. Touch your eyes.,8. Wave your arms.,9. Shake your body.,10. Stamp your foot.,III. Listen and tick.(根据你听到的内容，选出恰当的图片),1. Look at my arm.,2. Look at me. This is my ear.,3. Look at my hand.,4. Look at my face.,5. This is my mouth.,6. This is my body.,7. Look at my eyes.,8. This is my foot.,IV. Listen and circle.(听录音，圈出你所听到的单词),1. Look at my head.,2. Look at me. This is my nose.,3. I have a red mouth.,4. Look at my eyes.,5. Shake your body.,6. This is my head.,7. Look at me. This is my mouth.,8. Look at my legs.,9. I have a head.,10. I have a ear .,V. Listen and circle.(听单词，圈出单词的首字母),1. gift 2. foot 3. elephant 4. ice-cream,5. hand 6. ant 7. dog 8. cat二、听录音，选出你所听到的内容，每小题念两遍。(1 0分),1、（ ）A.pen B.pencil C.bag,2、（ ）A.crayon B.mouth C.eye,3、（ ）A.arm B.ant C.apple,4、（ ）A.black B.brown C.blue,5、（ ）A.yes B.yellow C.your,6、（ ）A.touch B.take C.tall,7、（ ）A.mum B.morning C.nose,8、（ ）A.Hello！ B.Look at me! C.How are you？,9、（ ）A.Good morning B.Thanks. C.Great.,10、（ ）A.B b B. C c C.D d,三、听录音，选出正确的答语，每小题念两遍。(5分),1、（ ）A.Good morning！ B.Good afternoon！ C.Good evening！,2、（ ）A.Nice to meet you，too. B.Thanks. C.Great.,3、（ ）A.Very well. B.Goodbye. C.My name is Chen Jie.,4、（ ）A.I see brown. B.Im fine,Thank you. C.OK.,5、（ ）A. Me too！ B.Bye. C. My name is Zoom.,四、将下列句子进行排序，构成一段完整的对话。（5分）,（ ）A.Good morning，Miss Chen.,（ ）B.How are you?,（ ）C.Very well,thanks!,（ ）D.Fine,Thank you.And you?,（ ）EGood morning，Miss Wu.,思考：你能写出几个算式,?,
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