一年级数学上册第3单元1-5的认识和加减法比大小练习课件新人教版.ppt

1、15的认识、比大小的认识、比大小练习练习第三单元：第三单元：15的认识和加减法的认识和加减法它们各自代表着我们学习的它们各自代表着我们学习的15各数各数，根据它们各自提供的信息，猜猜它们各是几？根据它们各自提供的信息，猜猜它们各是几？一、回忆旧知，引入练习一、回忆旧知，引入练习一、回忆旧知，引入练习一、回忆旧知，引入练习说：我和它们比，我最小。说：我和它们比，我最小。说：我和它们比，我最大。说：我和它们比，我最大。说：我站在这一组数的最中间说：我站在这一组数的最中间。说：我比长颈鹿小，比小猴大。说：我比长颈鹿小，比小猴大。说：我比长颈鹿大，但比小蜗牛小。说：我比长颈鹿大，但比小蜗牛小。一、回忆

2、旧知，引入练习一、回忆旧知，引入练习 小猴是1 12 13 14 11 52 53 54一、回忆旧知，引入练习一、回忆旧知，引入练习长颈鹿是3 12344321一、回忆旧知，引入练习一、回忆旧知，引入练习小蝴蝶是小蝴蝶是2 1243一、回忆旧知，引入练习一、回忆旧知，引入练习请请按照从小到大的顺序按照从小到大的顺序写一写写一写1 15 5各数各数。二、练习巩固，深化理解二、练习巩固，深化理解2.2.有几头有几头？1.1.看数涂色看数涂色你还想数什么？二、练习巩固，深化理解二、练习巩固，深化理解 用自己的方式表示用自己的方式表示 出出1 1、2 2、3 3、4 4、5 5。3.3.按按1 15

3、5 的顺序连线的顺序连线二、练习巩固，深化理解二、练习巩固，深化理解.数一数，比一比数一数，比一比22 111 22 43 4考一考你的同桌吧！()和()二、练习巩固，深化理解二、练习巩固，深化理解.填一填填一填2 44 55 41 33 1二、练习巩固，深化理解二、练习巩固，深化理解.下一个该涂什么颜色？涂一涂，数一数下一个该涂什么颜色？涂一涂，数一数44下一个该涂黄色。二、练习巩固，深化理解二、练习巩固，深化理解不一定对，要看篮子里有没有桃子，再进行判断。这节课你有哪些收获呢？这节课你有哪些收获呢？三、全课总结，畅谈收获三、全课总结，畅谈收获团Tiffany，a 16yearold gir

4、l，was very shy.Last September，her best friend，Sophie，moved abroad with her family because she had to continue her studies in America.She even said she would not come back for at least a few years.1 “I was really sad the moment I heard the bad news and I didnt know what to do，”Tiffany recalled.“I shu

5、t myself in my room for a whole week.It was then that my aunt took me to a sports club one Saturday and I saw so many young people playing different kinds of sports there.I signed up for a beginners course in volleyball and since then I have been playing this sport.Now I practice twice a week there.

6、It is wonderful playing sports in this club and I have made lots of friends as well.2 ”The most basic aim of playing sports is that you can improve your health even if you are not very good at sports.Besides，you can get to know a circle of people at your age while playing sports.3 Since she joined t

7、he sports club，she has opened up herself and now she has become very active and enjoys meeting and talking with others.1Its polite for girls to kiss each other on the side of the face.4Its no big deal.For most people，that is one of the reasons why they join a sports club.4 You dont have to sit down

8、and talk to strangers.You go in for sports and it is easier to understand your partners on the same team.Now Tiffany is quite popular with her friends and she has also become more confident.团圆圆一家在台湾可受欢迎了。每天，小朋友们排着长队，等着跟它们合影留念。从“排着长队”体现出每天喜欢它们的人不计其数，特别受欢迎。从“合影留念”体现出大家都想和大熊猫留住最美丽的瞬间以作纪念。Nothing can be accomplished without norms or standards.感谢阅读下载！祝你生活愉快，身体健康