《厘米的认识》教学设计(2).pdf

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1、厘米的认识教学设计高密市崇实小学杨红【教学目标】1、在实践活动中，认识刻度尺，认识长度单位“厘米”，初步建立1 厘米的长度观念。2、结合实际，实践采用不同的方法测量物体长度的过程，体会统一长度单位的必要性，并能用刻度尺正确测量物体的长度。3、估计一些物体的长度，形成初步的估计意识。4、在具体的测量活动中，感受数学与现实生活的密切联系，体验合作学习的乐趣，养成做事认真的习惯。【教学重点】认识厘米，体会厘米的实际意义，会进行简单的计算和测量；了解测量方法的多样性，初步体会统一单位的必要性。【难点】体会厘米的实际意义，建立“1 厘米”的长度观念。【教学突破】以故事“阿福的新衣”引入，让学生初步体会统

2、一长度单位的必要性，然后在寻找 1 厘米长度的物体的活动中体会1 厘米的实际意义，学会对物体的测量方法。【教具准备】课件、尺子，测量用的纸条。【教学关键】根据儿童的认知规律，建立1 厘米的长度观念。【教学过程】一、导入课题，快乐学习师：今天老师给大家带来了一段非常有趣的动画片，讲的是一个叫阿福的人在做衣服的时候闹笑话了，大家想知道是什么笑话吗？让我们来看一下吧。二、研讨学习，动脑思考（学生看完动画）师：大家看到了阿福很不高兴，小徒弟也很纳闷，想想这是为什么呢？小组先讨论一下，一会儿发言。（小组讨论）生：师傅的手大，徒弟的手小，师傅和徒弟两人的拃不一样长师：我们想个什么方法才能不再闹这样的笑话了

3、呢？生：应该用同一个人的手去量，应该用尺子去量。师：对，我们要得到一个统一的结果，只有用同样的标准去量才能避免出现这样的情况。三、讲解学习，动手实践师：请同学们拿出尺子认识一下；请大家摸一摸，看一看，你发现了什么？和同位交流一下。（学生观察后汇报，教师课件演示，让学生了解尺子的结构）生：在尺子上有很多数字。（课件在尺子上出示0、1、2、3 等数）师：对，有数。同学们读一读（生自由读）生：数字是按照由小到大排列的。师：你们看，尺子上最左端的数是几?尺子上最小的数是几？生：是 0 师：0 我们以前已经认识了，那你们猜猜看，尺子上的0 表示什么？文档编码:CV7Q7P2H4A10 HK8A8B9F7

4、X4 ZN1C1E2Q8A8文档编码:CV7Q7P2H4A10 HK8A8B9F7X4 ZN1C1E2Q8A8文档编码:CV7Q7P2H4A10 HK8A8B9F7X4 ZN1C1E2Q8A8文档编码:CV7Q7P2H4A10 HK8A8B9F7X4 ZN1C1E2Q8A8文档编码:CV7Q7P2H4A10 HK8A8B9F7X4 ZN1C1E2Q8A8文档编码:CV7Q7P2H4A10 HK8A8B9F7X4 ZN1C1E2Q8A8文档编码:CV7Q7P2H4A10 HK8A8B9F7X4 ZN1C1E2Q8A8文档编码:CV7Q7P2H4A10 HK8A8B9F7X4 ZN1C1E2Q8A

5、8文档编码:CV7Q7P2H4A10 HK8A8B9F7X4 ZN1C1E2Q8A8文档编码:CV7Q7P2H4A10 HK8A8B9F7X4 ZN1C1E2Q8A8文档编码:CV7Q7P2H4A10 HK8A8B9F7X4 ZN1C1E2Q8A8文档编码:CV7Q7P2H4A10 HK8A8B9F7X4 ZN1C1E2Q8A8文档编码:CV7Q7P2H4A10 HK8A8B9F7X4 ZN1C1E2Q8A8文档编码:CV7Q7P2H4A10 HK8A8B9F7X4 ZN1C1E2Q8A8文档编码:CV7Q7P2H4A10 HK8A8B9F7X4 ZN1C1E2Q8A8文档编码:CV7Q7P2

6、H4A10 HK8A8B9F7X4 ZN1C1E2Q8A8文档编码:CV7Q7P2H4A10 HK8A8B9F7X4 ZN1C1E2Q8A8文档编码:CV7Q7P2H4A10 HK8A8B9F7X4 ZN1C1E2Q8A8文档编码:CV7Q7P2H4A10 HK8A8B9F7X4 ZN1C1E2Q8A8文档编码:CV7Q7P2H4A10 HK8A8B9F7X4 ZN1C1E2Q8A8文档编码:CV7Q7P2H4A10 HK8A8B9F7X4 ZN1C1E2Q8A8文档编码:CV7Q7P2H4A10 HK8A8B9F7X4 ZN1C1E2Q8A8文档编码:CV7Q7P2H4A10 HK8A8B9

7、F7X4 ZN1C1E2Q8A8文档编码:CV7Q7P2H4A10 HK8A8B9F7X4 ZN1C1E2Q8A8文档编码:CV7Q7P2H4A10 HK8A8B9F7X4 ZN1C1E2Q8A8文档编码:CV7Q7P2H4A10 HK8A8B9F7X4 ZN1C1E2Q8A8文档编码:CV7Q7P2H4A10 HK8A8B9F7X4 ZN1C1E2Q8A8文档编码:CV7Q7P2H4A10 HK8A8B9F7X4 ZN1C1E2Q8A8文档编码:CV7Q7P2H4A10 HK8A8B9F7X4 ZN1C1E2Q8A8文档编码:CV7Q7P2H4A10 HK8A8B9F7X4 ZN1C1E2Q

8、8A8文档编码:CV7Q7P2H4A10 HK8A8B9F7X4 ZN1C1E2Q8A8文档编码:CV7Q7P2H4A10 HK8A8B9F7X4 ZN1C1E2Q8A8文档编码:CV7Q7P2H4A10 HK8A8B9F7X4 ZN1C1E2Q8A8文档编码:CV7Q7P2H4A10 HK8A8B9F7X4 ZN1C1E2Q8A8文档编码:CV7Q7P2H4A10 HK8A8B9F7X4 ZN1C1E2Q8A8文档编码:CV7Q7P2H4A10 HK8A8B9F7X4 ZN1C1E2Q8A8文档编码:CV7Q7P2H4A10 HK8A8B9F7X4 ZN1C1E2Q8A8文档编码:CV7Q7

9、P2H4A10 HK8A8B9F7X4 ZN1C1E2Q8A8文档编码:CV7Q7P2H4A10 HK8A8B9F7X4 ZN1C1E2Q8A8文档编码:CV7Q7P2H4A10 HK8A8B9F7X4 ZN1C1E2Q8A8文档编码:CV7Q7P2H4A10 HK8A8B9F7X4 ZN1C1E2Q8A8文档编码:CV7Q7P2H4A10 HK8A8B9F7X4 ZN1C1E2Q8A8文档编码:CV7Q7P2H4A10 HK8A8B9F7X4 ZN1C1E2Q8A8文档编码:CV7Q7P2H4A10 HK8A8B9F7X4 ZN1C1E2Q8A8文档编码:CV7Q7P2H4A10 HK8A8

10、B9F7X4 ZN1C1E2Q8A8文档编码:CV7Q7P2H4A10 HK8A8B9F7X4 ZN1C1E2Q8A8文档编码:CV7Q7P2H4A10 HK8A8B9F7X4 ZN1C1E2Q8A8文档编码:CV7Q7P2H4A10 HK8A8B9F7X4 ZN1C1E2Q8A8（课件闪烁“0”）生：尺子上的0 表示起点师：对，0 对着的这根长刻度线就表示起点，我们给它取个名字，叫0刻度（板书）师：你们还发现了什么？生：尺子上还有很多线，有的长有的短生：尺子上还有字母CM 师：线叫刻度线，cm 就表示厘米。厘米是一种常用的长度单位，它一般用来测量较短物体的长度，今天我们就来认识它吧。（板书：

11、厘米），也可以用字母cm来表示（板书：cm）。四、加深认识，建立1 厘米的空间观念师：把食指放到 0 刻度线上，从 0 刻度慢慢滑到1 刻度，它之间的长度就是 1 厘米。同学们用手从0 摸到 1，感觉一下，每相邻两条最长刻度线之间的长度都是1 厘米。指给同桌看自己尺子上的一厘米。（同桌之间相互验证）你还能找出尺子上哪一段也是一厘米？师：刚才我们认识了1 厘米，那从2 到 3，从 3 到 4，从 6 到 7，从 9 到10 是几厘米？（课件展示不同长度，让学生说出长度是几厘米）师：从这里，你发现了什么？生：它们每一大格都是1 厘米长。师:对，尺子上每一大格的长度都是1 厘米，其实，每一小格的长度

12、也可以用一种更小的长度单位来表示，咱们以后认识。师：刚才，我们了解了1 厘米是多长，下面我们找一找，比一比，在我们身边或在我们身上以及周围还有哪些物体的长度是1 厘米呢？(学生们找，测量)文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7

13、I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档

14、编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK1

15、0K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E

16、9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 H

17、H2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4

18、P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 Z

19、O9W3K7I9W1师：伸出你的左手，用右手拿尺子，将手指一个个的放在尺子了，看一下哪个手指的宽度大约是1 厘米？用你的手势来比一下1 厘米有多长。（学生比划大姆指的宽度为1 厘米）师：同学们知道 1 厘米的长度了，那你知道尺子上0 刻度到 4 刻度之间有多长吗？（生试着回答）师：谁的方法跟他不一样了，如果从 0 刻度开始的右边对着几就读出几厘米。从 07；从 010；那么从 2 8 是几厘米？为什么是6 厘米？生：有 6 个大格师：你能从你的尺子上找出哪一段是5 厘米吗？（学生找，师巡视）师：（强调从数字几数字几）数一下有几个大格就是几厘米。师：（课件出示）我们来看看徒弟的一拃有多长呢？一拃

20、的长度是指从大姆指指尖到中指指尖的这段距离。生：（生先估再答）12 厘米。师：徒弟一拃长12 厘米，大家来估计一下师傅的一拃可能有多长？（生估计并回答：20 厘米）师：这样我们也就知道了阿福的上衣之所以做小的原因了是不是?现在我们知道了师傅和徒弟一拃的长度，你想不想知道你的一拃有多长？自己量一下，同位之间交流。（生测量并汇报）师：（总结一边示范一边介绍）测量物体长度时，先把物体放平，一般将物体的左边和 0 刻度线对齐，物体右边对着几厘米，就读出几厘米。师：老师这里有一些蓝纸条，不知道他们的长度，你们可以帮老师量一下吗？（两人一组测量）生积极测量，回答，然后再测量（白纸条、红纸条）文档编码:CK

21、10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8

22、E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10

23、HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M

24、4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3

25、ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K

26、7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文

27、档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1五、拓展师：如果要量桌子的宽，又没带尺子，怎么办呢？（生想办法并发言，用拃、指）师：今天我们认识了厘米，学会了用厘米量，同学们表现都非常出色，老师想请你们帮个忙。前几天，我做衣服的时

28、候，需知道手腕一圈的长度，可用直尺怎么量都不方便，你们有什么好方法吗？生：可以用纸条绕手腕一圈，然后量出纸条的长度就可以了。生：也可用绳子先量手腕一圈，再来量绳子的长度。生：可用软尺。师：对呀！大家真聪明，其实测量物体的长度还有很多工具，以后我们慢慢学习。六、练习测量刚才同学们已经学会看尺子了，现在我们分组利用尺子来量一量（1）每组桌面上有一个信封，听要求：请组长把里面的东西倒在桌面上，小组成员合作找出大约是1 厘米的物体放在一起。比比哪组合作的好、找的准。（教师巡视）（2）谁想代表你组来说一说？那组有补充？（订书钉的宽度、橡皮的厚度、纽扣的宽度、水彩笔的宽度、正方体的长度、柳叶的宽度）七、评

29、价总结说一说这节课你学到了什么？（生积极回答）这节课同学们听讲认真，回答问题积极，表现非常出色。【课后作业】回家后以厘米为单位，量一量你喜欢的物体的长度。文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8

30、E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10

31、HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M

32、4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3

33、ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K

34、7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文

35、档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1【板书设计】认

36、识厘米厘米 cm【教学反思】测量物体的长度通常用尺子，因而在本课的教学中引导学生认识尺子，了解尺子的结构是必不可少的环节。本科的重点是让学生认识0 刻度线和尺子上的一大格式1 厘米，几个大格就是几厘米，是学生测量后准确读取长度的基础，也为学生利用断尺测量物体长度奠定了基础。文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K

37、7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文

38、档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK

39、10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8

40、E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10

41、HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M

42、4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1文档编码:CK10K8H8E9Y10 HH2V9M4P6T3 ZO9W3K7I9W1