《年月日》（教案）-2023-2024学年三年级下册数学人教版

人教版小学数学三年级下册《年月日》教案 教学内容： 认识年、月、日 教材第70-72页的内容。 教学目标：1、使学生认识时间单位年、月、日，了解他们之间的关系。 2、知道平年、闰年等方面的知识。 3、记住每个月以及平年、闰年各有多少天。 4、培养学生珍惜时间的良好习惯。 教学重难点： 教学用具：教学、各年份的年历一人一张 教学过程：1、使学生认识时间单位年、月、日，了解他们之间的关系。 2、 知道平年、闰年等方面的知识。 一、创设情景，导入课题。 1、猜谜语 有个宝宝真稀奇， 身穿三百多件衣。 每天都要脱一件， 年底只剩一张皮。 （打一物） 那么让我们一起来学习年、月、日。（板书：年、月、日） 二、自主学习，探索新知。 1、初步认识年月日。 还有很多有意思的时刻。（出示） ①介绍：1949年10月1日中华人民共和国成立。这是个伟大的日子，请大家读一读这时间。 ②展示申奥成功的图片。这也是一个激动人心的时刻，同学们知道是哪年的7月13日么？（2001年） ③还有很多有意义的日子，来看看。出示植树节图片。（3月12日）六一节（6月1日） 2、学生介绍有意义的日子。 一年中还有哪些有意义值得纪念的日子？大家一起在年历上标出来。 （人手一张年历，各种不同的年份）学生汇报。 3、自主探索，发现年历的知识。 年历上有这么多有意义的日子呀，其实年历上还可以找到很多信息和知识！请四人为一个小组讨论下，看看哪组获得的信息多。 4、学生汇报探索到的有关年历的知识。 ①一年有12个月。 ②每月有31天的是：一、三、五、七、八、十、十二月。（大月） ③每月有30天的十：四、六、九、十一月。（小月） ④二月份有的是28天，有的是29天。 ⑤一年有365天，366天。（请同学们在本子上算一算，用什么方法算好呢？） 31×7＋30×4＋28＝365天 31×7＋30×4＋29＝366天 5、学习大月小月的记忆法。 能记住哪些是大月，哪些是小月么？用什么方法记忆的？（让学生说说，学生知道让学生来介绍。） ①拳头记忆法。 凸起的地方每月是31天，凹下去的地方每月是30天（二月除外） 一边指一边读：一月大，二月少，三月大，四月小……（二月不是小月，我们为了方便记住它比别的月份都少几天，我们读二月少），七月大，八月大（七月完是八月，这2个连着的月份都是大月） ②用歌诀记忆法。 一三五七八十腊，三十一日永不差。（腊是十二月，这是帮助记忆大月的歌诀。） 这么多记忆的方法，现在考考大家，老师说一个月，看看你们能不能很快说出这个月的天数？（最后问到二月，有人说28有人说29） 6、学生质疑，引导解决。 现在同学们对什么问题还有疑问？引导学生提出（1、到底什么时候是28天，什么时候是29天呢？2、为什么要有时28天有时29天呢？） ①一起来研究下这特殊的二月。（每位学生来说下自己手中的年历2月份的天数，展示表格） 年份 1996 1997 1998 1999 2000 2001 2002 2003 2004 二月的天数 29 28 28 28 29 28 28 28 29 ②发现了什么？（引导学生说出四年一闰） 介绍平年和闰年。平年一年有365天，闰年一年有366天。 ③为什么有时28天，有时29天呢？观看录像。 ④那奥运会2008年是平年还是闰年？1994年呢？ ⑤你们是哪一年出生的？你们出生的那年是平年还是闰年？ 7、有关闰年的小练习。 你们过了几个生日了？小明的生日是1996年2月29日，请问他到现在为止过了几个生日了？ 三、总结。 1、这节课我们学习了什么知识？（学生汇报） 2、珍惜时间的思想教育。 马上就要下课了啊，时间过得真快。那我们这节课不仅学到了那么多知识还学到了要珍惜时间！ 四、扩展练习。 前面学习了中华人民共和国成立的时间是？1949年是平年还是闰年，回去思考一下。 板书设计： 年 月 日 2007年3月20日15时30分3秒 一年有12个月 一年有365天 31×7＋30×4＋28＝365天 366天 31×7＋30×4＋29＝366天 每月有31天的是：一、三、五、七、八、十、十二月。（大月） 每月有30天的十：四、六、九、十一月。（小月） 二月份：28天平年 29天闰年 清水混凝土的配合比设计中，要针对当地水泥、砂石、外掺料及外加剂等原材料影响混凝土质量的多种因素进行分析，确定主要控制因素，并从经济性和使用要求综合考虑，优选出符合生产条件的最优方案组合。obstacles, correcting misunderstandings, advocate good cadre style. 2, adhere to the scientific decision-making and democratic decision-making decision-making law. Correctly handle to ensure that government decrees and based on the actual creative work, giving full play to subjective initiative, put an end to implement the conference meeting, to document the implementation of documents etc. Improve the scientific and democratic decision-making mechanism, improve and implement the decision to solicit the views of experts, the public hearing system. Improve the important decision of risk assessment mechanism and legal review mechanism. 3, to promote team unity. Uphold and improve the system of annual party book talk heart to heart, mind and Party members, Party members to exchange each other not less than 2 times. The implementation of sound team democratic life system, consolidate and enhance the party's mass line educational practice will promote the achievement of the topic of democratic life, criticism and self-criticism normalization, a long-term. Adhere to the party on the basis of the principle of unity, enhance internal communication, strengthen internal supervision, self Sleep maintenance team collective image and authority. (three) to ensure the execution is not strong or disguised to resist government decrees issues. Individual Bureau leadership team members lack of learning political theory system, not from the objective reality, not with the party's interests above all the principles to deal with personal problems. In the specific work safety supervision in the execution is not strong, in the implementation of the decision to deploy the discount, make choices, engage in work, the implementation of the agreement, uncomfortable is not performed, open or disguised to resist, the lack of subject consciousness of the party organization, the lack of resist in society all kinds of bad habits and unwholesome tendencies of courage Gas and courage. Such as the liability insurance of safe production work, individual leaders that have someone arrested, and no funding, not in the global chess perspective to the countryside to carry out daily inspection, found none of my business acceptance of the resumption of production in an armchair, with a pen, indifferent. Corrective measures: (LED Leadership: Luo Mingjun, rectification time: before September 25th, insist for a long time) 1, to strengthen the sense of responsibility, work to solve the lack of decent occupation explain away, conduct problems. To establish the overall concept, eliminate departmentalism. Strict assessment and accountability, to solve the spiritual slack, nianqingpazhong, status quo, To establish and perfect the muddle along and other issues. Bureau staff conduct work regulations, standardize the behavior of personnel. 2, strengthen the responsibility system. One is the in-depth study and implement the "Hunan provincial Party and government leading cadres Interim Provisions on the work safety of a pair of > (Hunan Office issued 2013 No. 清水混凝土的配合比设计中，要针对当地水泥、砂石、外掺料及外加剂等原材料影响混凝土质量的多种因素进行分析，确定主要控制因素，并从经济性和使用要求综合考虑，优选出符合生产条件的最优方案组合。obstacles, correcting misunderstandings, advocate good cadre style. 2, adhere to the scientific decision-making and democratic decision-making decision-making law. Correctly handle to ensure that government decrees and based on the actual creative work, giving full play to subjective initiative, put an end to implement the conference meeting, to document the implementation of documents etc. Improve the scientific and democratic decision-making mechanism, improve and implement the decision to solicit the views of experts, the public hearing system. Improve the important decision of risk assessment mechanism and legal review mechanism. 3, to promote team unity. Uphold and improve the system of annual party book talk heart to heart, mind and Party members, Party members to exchange each other not less than 2 times. The implementation of sound team democratic life system, consolidate and enhance the party's mass line educational practice will promote the achievement of the topic of democratic life, criticism and self-criticism normalization, a long-term. Adhere to the party on the basis of the principle of unity, enhance internal communication, strengthen internal supervision, self Sleep maintenance team collective image and authority. (three) to ensure the execution is not strong or disguised to resist government decrees issues. Individual Bureau leadership team members lack of learning political theory system, not from the objective reality, not with the party's interests above all the principles to deal with personal problems. In the specific work safety supervision in the execution is not strong, in the implementation of the decision to deploy the discount, make choices, engage in work, the implementation of the agreement, uncomfortable is not performed, open or disguised to resist, the lack of subject consciousness of the party organization, the lack of resist in society all kinds of bad habits and unwholesome tendencies of courage Gas and courage. Such as the liability insurance of safe production work, individual leaders that have someone arrested, and no funding, not in the global chess perspective to the countryside to carry out daily inspection, found none of my business acceptance of the resumption of production in an armchair, with a pen, indifferent. Corrective measures: (LED Leadership: Luo Mingjun, rectification time: before September 25th, insist for a long time) 1, to strengthen the sense of responsibility, work to solve the lack of decent occupation explain away, conduct problems. To establish the overall concept, eliminate departmentalism. Strict assessment and accountability, to solve the spiritual slack, nianqingpazhong, status quo, To establish and perfect the muddle along and other issues. Bureau staff conduct work regulations, standardize the behavior of personnel. 2, strengthen the responsibility system. One is the in-depth study and implement the "Hunan provincial Party and government leading cadres Interim Provisions on the work safety of a pair of > (Hunan Office issued 2013 No. 清水混凝土的配合比设计中，要针对当地水泥、砂石、外掺料及外加剂等原材料影响混凝土质量的多种因素进行分析，确定主要控制因素，并从经济性和使用要求综合考虑，优选出符合生产条件的最优方案组合。obstacles, correcting misunderstandings, advocate good cadre style. 2, adhere to the scientific decision-making and democratic decision-making decision-making law. Correctly handle to ensure that government decrees and based on the actual creative work, giving full play to subjective initiative, put an end to implement the conference meeting, to document the implementation of documents etc. Improve the scientific and democratic decision-making mechanism, improve and implement the decision to solicit the views of experts, the public hearing system. Improve the important decision of risk assessment mechanism and legal review mechanism. 3, to promote team unity. Uphold and improve the system of annual party book talk heart to heart, mind and Party members, Party members to exchange each other not less than 2 times. The implementation of sound team democratic life system, consolidate and enhance the party's mass line educational practice will promote the achievement of the topic of democratic life, criticism and self-criticism normalization, a long-term. Adhere to the party on the basis of the principle of unity, enhance internal communication, strengthen internal supervision, self Sleep maintenance team collective image and authority. (three) to ensure the execution is not strong or disguised to resist government decrees issues. Individual Bureau leadership team members lack of learning political theory system, not from the objective reality, not with the party's interests above all the principles to deal with personal problems. In the specific work safety supervision in the execution is not strong, in the implementation of the decision to deploy the discount, make choices, engage in work, the implementation of the agreement, uncomfortable is not performed, open or disguised to resist, the lack of subject consciousness of the party organization, the lack of resist in society all kinds of bad habits and unwholesome tendencies of courage Gas and courage. Such as the liability insurance of safe production work, individual leaders that have someone arrested, and no funding, not in the global chess perspective to the countryside to carry out daily inspection, found none of my business acceptance of the resumption of production in an armchair, with a pen, indifferent. Corrective measures: (LED Leadership: Luo Mingjun, rectification time: before September 25th, insist for a long time) 1, to strengthen the sense of responsibility, work to solve the lack of decent occupation explain away, conduct problems. To establish the overall concept, eliminate departmentalism. Strict assessment and accountability, to solve the spiritual slack, nianqingpazhong, status quo, To establish and perfect the muddle along and other issues. Bureau staff conduct work regulations, standardize the behavior of personnel. 2, strengthen the responsibility system. One is the in-depth study and implement the "Hunan provincial Party and government leading cadres Interim Provisions on the work safety of a pair of > (Hunan Office issued 2013 No. 学科网（北京）股份有限公司 $$