人教版数学一年级课件《减法》PPT教学课件.pptx

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,减法,人教版数学一年级课件,指导老师：,XXX,emplateforthetitlecontentyouwantoaddPleaseaddaclearbu,PleaseaddaclearbusinesstemplateforthetitlecontentyouwantoaddPleaseaddaclearbuPleaseaddaclearbusinesst,目录/CONTENTS,导入新课,1,CLICK HERE TO ADD TITLE,课中练习,2,CLICK HERE TO ADD TITLE,学习新课,3,CLICK HERE TO ADD TITLE,课后练习,4,CLICK HERE TO ADD TITLE,PART 01,导入新课,The user can demonstrate on a projector or computer,or print the presentation and make it into a film to be used in a wider field,3,1,4,1,5,4,2,3,1,里的数是多少？,还剩几个气球？,探究点,1,：理解减法的含义,（教材第,26,页内容）,读作：,4,减 1 等于,3,。,减号,4,去掉用,“,-,”,号表示。,用小圆片来摆一摆刚才的过程。,请你说一说算式中各部分表示什么意思。,1,3,=,看图说一说算式表示的意思。,（教材,P26,做一做）,5,1,4,4,2,2,PART 02,巩固练习,The user can demonstrate on a projector or computer,or print the presentation and make it into a film to be used in a wider field,3,2,1,看图说一说算式表示的意思。,（教材,P26,做一做）,5,3,2,你能用一道减法算式表示这幅图的意思吗？,5-3=2,是怎么算出来的？,探究点,2,：,5,以内减法的计算方法,（教材第,27,页内容）,3,5,从,5,倒着数，5、4、3，还剩2,只。,2,PART 03,巩固练习,The user can demonstrate on a projector or computer,or print the presentation and make it into a film to be used in a wider field,（教材,P27,做一做,1,）,5-1,4,1.,5-4,1,（教材,P27,做一做,2,）,2.,划一划，填一填。,4-1,3,4-,2,2,3,1,（教材,P27,做一做,3,）,3.,涂,一,涂,，,填一填,。,2,3,1,4,1,5,2,3,3,2,1,1,5,4,1,1.,（教材,P28,第,3,题）,3+,1,4,1+,3,4,2.,（教材,P29,第,6,题）,PART 04,巩固练习,The user can demonstrate on a projector or computer,or print the presentation and make it into a film to be used in a wider field,2.,用自己喜欢的方式表示出下面算式的意思。,4,2,1,4,5,2,（教材,P28,第,5,题）,4,1,3,4,3,1,3.,（教材,P29,第,6,题）,谢谢观看,人教版数学一年级课件,指导老师：,XXX,emplateforthetitlecontentyouwantoaddPleaseaddaclearbu,PleaseaddaclearbusinesstemplateforthetitlecontentyouwantoaddPleaseaddaclearbuPleaseaddaclearbusinesst,