一、说教材本节课是北师大版小学二年级数学上册第六单元测量中第一课内容。课标要求经历“直接比较、运用非标准长度单位测量、运用标准长度单位测量”三个过程,这样可以帮助学生对标准长度单位的意义有充分的理解。本节课通过测量活动,让学生体会量的概念,为后续正式学习长度单位做好准备。二、学情分析学生在一年级时已经积累了比较直接长、短的活动经验,对长和短有了一定的认识,能想出很多测量的方法。但由于学生年龄小,引导学生小组内互助解决问题尤为重要。三、说教学目标1.知识目标:积累测量活动经验,发展度量意识和能力。2.能力目标:经历用不同方式测量教室长度的过程,体会测量方式、测量工具的多样性。3.情感态度价值观:在测量活动中培养学生互助、交流表达的能力。四、说教学重、难点教学重点:积累测量活动经验,发展度量意识和能力。教学难点:在测量活动中培养学生合作互助、交流表达的能力。
一、导入师:今天看见一道题把老师给难住了,想大家帮帮忙,同学们愿不愿意啊?生:愿意师:出示课件(看图猜成语) 生:画蛇添足、虎头蛇尾师:看来大家的语文基础还是很扎实了,谢谢大家的帮忙。大家有没有发现刚才的两个成语有一个共同点是什么?谁能告诉老师今年是什么年?去年是什么年?明年又是什么年?生:蛇年、龙年、马年师:请把你知道的生肖年勇敢、大胆、完整的告诉大家 生:略师:今天就让我们一起走进“十二生肖”的国度。 出示课件《十二生肖》
2学情分析 新入学的学生第一次接触正规化的美术课,对一年级学生来说是新 奇、有趣、好玩的,而且新生入学前所受的教育各不相同,心理因素 也不一样,在绘画上、工艺制作上一定有着自己的创造思维、想象能 力和自己的个性,但这些会造成学习的不一致性、习惯不统一化,给 美术课的课堂带来不必要的麻烦。因此, 对待这些刚进入课堂的小朋友, 我们在情感态度上要做出很大 的努力,小学生在思维的想象力、创造力方面发展的空间很大,所以 我们要好好把握机会, 激发孩子们对美术学习的兴趣,让孩子们能发 现美,有创造美的想法。
3学情分析 鼓的历史很悠久,中国在原始社会时期就有了鼓。古时候,鼓曾被广泛用于祭祀、战争、宗教等场合。在现代,鼓也广泛应用于生活的各个领域,如生活娱乐、节日庆典,人们用它来表达思想、抒发感情。把鼓作为学习内容,目的是让学生通过本课知识的学习,大略知道鼓的来源和作用等有关鼓的文化知识,学习表现打鼓的动态,更好的体验美术造型表现的乐趣,增加民族自豪感。4重点难点 教学重点:学习运用绘画语言创作少数民族同胞打鼓的形象。教学难点:在创作中大胆的、形象的表现出活灵活现的人物动态。
1.用CAI课件模拟汽车的启动过程。师生共同讨论:①如果作用在物体上的力为恒力,且物体以匀速运动,则力对物体做功的功率保持不变。此情况下,任意一段时间内的平均功率与任一瞬时的瞬时功率都是相同的。②很多动力机器通常有一个额定功率,且通常使其在额定功率状态工作(如汽车),根据P=FV可知:当路面阻力较小时,牵引力也小,速度大,即汽车可以跑得快些;当路面阻力较大,或爬坡时,需要比较大的牵引力,速度必须小。这就是爬坡时汽车换低速挡的道理。③如果动力机器在实际功率小于额定功率的条件下工作,例如汽车刚刚起动后的一段时间内,速度逐渐增大过程中,牵引力仍可增大,即F和v可以同时增大,但是这一情况应以二者乘积等于额定功率为限度,即当实际功率大于额定功率以后,这种情况不可能实现。
(五)平抛运动规律的应用例1:一架老式飞机在高出海面45m的高处,以80m/s的速度水平飞行,为了使飞机上投下的炸弹落在停在海面上的敌船,应该在与轰炸目标的水平距离为多远的地方投弹?不计空气阻力。分析:对于这道题我们可以从以下几个方面来考虑:(1)从水平飞行的飞机上投下的炸弹,做什么运动?为什么?(2)炸弹的这种运动可分解为哪两个什么样的分运动?3)要想使炸弹投到指定的目标处,你认为炸弹落地前在水平方向通过的距离与投弹时飞机离目标的水平距离之间有什么关系?拓展:1、式飞机在高出海面45m的高处,以80m/s的速度水平飞行,尾追一艘以15m/s逃逸的敌船,为了使飞机上投下的炸弹正好击中敌船,应该在与轰炸目标的水平距离为多远的地方投弹?不计空气阻力。2、在一次摩托车跨越壕沟的表演中,摩托车从壕沟的一侧以速度v=40m/s沿水平方向向另一侧,壕沟两侧的高度及宽度如图所示,摩托车可看做质点,不计空气阻力。(1)判断摩托车能否跨越壕沟?请计算说明(2)若能跨过,求落地速度?
3.进一步体会力是产生加速度的原因,并通过牛顿第二定律来理解匀速圆周运动、变速圆周运动及一般曲线运动的各自特点。(三)、情感、态度与价值观1.在实验中,培养学生动手、探究的习惯。2.体会实验的意义,感受成功的快乐,激发学生探究问题的热情、乐于学习的品质。教学重点1.体会牛顿第二定律在向心力上的应用。2.明确向心力的意义、作用、公式及其变形,并经行计算。教学难点1.对向心力的理解及来源的寻找。2.运用向心力、向心加速度的知识解决圆周运动问题。教学过程(一)、 引入新课:复习提问:匀速圆周运动的物体的加速度——向心加速度,它的方向和大小有何特点呢?学生回答后进一步引导:那做匀速圆周运动物体的受力有什么特点呢?是什么力使物体做圆周运动而不沿直线飞出?请同学们先阅读教材
【教材分析】The topic of this unit is about teenage life, which belongs to the theme context of “humans and oneself”.As teenagers who shoulder the responsibility of “Chinese great dream”, they must fully know themselves, including their strengths, weaknesses and challenges etc. They are supposed to improve themselves continuously and readily study their subjects, and thus foster their strategies and confidence in lifelong studies.This period is entitled the freshmen challenges, which mainly concerns some big challenges for new students in Senior high school. In this period, a teacher should lead students to find out what their challenges are and guide them to figure out how to crack the challenges and better themselves. More importantly, a teacher should instruct students to absorb new language points and appreciate the language. Besides, a teacher must instruct students to acquire some skills concerning reading efficiently and inspire them to talk more about their new school life, especially their new problems and solutions both at school and in life.【教学目标与核心素养】1. Enable students to acquire the basic usage of the new words and expressions concerning the freshmen challenges and learn to use them flexibly.2. Enable students to have a good understanding of the freshmen challenges in the new senior high school which is quite different from junior middle school.3. Develop students’ sense of cooperative learning and individual thinking capability. 4. Develop students’ different learning skills to solve different reading comprehensive problems.
【教材分析】This teaching period mainly deals with reading for writing a letter of advice. Students are expected to learn the knowledge about how to write a suggestion letter. The teacher is expected to enable students to master some writing skills concerning suggestion letters and learn to write one.【教学目标与核心素养】1. Get students to have a good understanding of how to write a suggestion letter properly.2. Enable students to use some writing skills flexibly.3. Develop students’ writing and cooperating abilities.4. Strengthen students’ great interest in writing discourses.【教学重难点】1. How to enable students to have a good understanding of the skills of writing a suggestion letter2.How to enable students to write a good recommendation letter using some writing skills properly.【教学过程】Step 1: Lead in Begin the class with the lead-in questions: how to write a letter for advice? What kinds of aspects should be included? It is strongly recommended that the teacher should ask students to discuss the topic freely with their partners and brainstorm some ideas concerning the topic. In this way, students can come up with more ideas and avoid being nervous at the beginning of the class.Step 2: Read to discover details concerning advice letters’ writing style.The teacher is expected to ask students to read a letter offering some advice on page 18 silently and then request students to discuss the questions below.
①标题——标题应当简洁明了。②导语——导语是消息开头的第一段或第一句话,简明扼要地揭示出消息的核心内容。③主体——主体是消息的主要部分,要用充足的事实表现主题,对导语的内容作进一步的展开和阐述。④结束语——通常是对全文内容进行概括性的总结。3. 新闻报道增分句子(1)陈述事实常用的句型:①A terrible storm hit/struck ... , killing ..②It was a cool autumn night when the earthquake happened. A large number of buildings fell down and roads were destroyed, leaving a great many people homeless.地震发生在一个凉爽的秋夜。大量的建筑物倒塌,道路被毁,许多人无家可归。③With the help of the rescue team, people who were the trapped in the flood were saved.在救援队的帮助下,困在洪水中的人们得救了。(2)陈述观点常用的句型:①Clearly/Obviously/In my opinion/It seemed that people were shocked.显然/在我看来/似乎人们震惊了。②The whole city was in ruins after the earthquake.地震后整个城市成了一片废墟。(3)揭示原因常用的句型:Because of/As a result of/Thanks to the help of the army, people who got injured were sent to the hospital immediately.
【教材分析】This teaching period mainly deals with the grammar: the restrictive relative clauses.This period carries considerable significance to the cultivation of students’ writing competence and lays a solid foundation for the basic appreciation of language beauty. The teacher is expected to enable students to master this period thoroughly and consolidate the knowledge by doing some exercise of good quality.【教学目标与核心素养】1. Get students to have a good understanding of the basic usages of the restrictive relative clauses.2. Enable students to use the restrictive relative clauses flexibly.3. Develop students’ speaking and cooperating abilities.4. Strengthen students’ great interest in grammar learning.【教学重难点】How to enable students to have a good understanding of the restrictive relative clauses, especially the uses of the relative words such as which, that, who, whom.【教学过程】Step1: 语法知识呈现定语从句(一)—关系代词的用法在复合句中, 修饰名词或代词的从句叫定语从句。定语从句通常由关系代词或关系副词引导,说明事物的具体信息,从句位于被修饰词之后。被定语从句修饰的词叫先行词,引导定语从句的词叫关系词,关系词指代先行词,并在定语从句中充当成分。关系词有两种:关系代词who, whom ,whose, that, which, as和关系副词when, where, why。
【教材分析】高考听力材料的选用非常重视语言真实性和交际性的原则,语言材料一般来源于实际生活,对话的内容大都取材于日常生活,即衣、食、住、行、工作、学习、天气、生活环境等话题,可分为校园、公共场所、家庭等方面,如: shopping, finding the way, doing one’s homework, seeing a doctor, making a phone call, weather report, asking for different kinds of information等。新教材的特点就是利用生活中真实文本,只是降低难度,让学生注重语言的应用,将是我们高考把握方向的重要因素。【教学目标与核心素养】学习能力目标:在听力当中,学生应该有效规划学习方法,选择恰当的策略与方法。这节课的训练目标是让学生有正确的预测和抓住问题的关键信息,从而用心去听来找寻关键信息。根据生活中实际情况和高考常见语境,我们不难发现提前预测和抓住题干中的w很重要,即what, where, when, why等等。
II Learn the technical terms-2.1. What can be used as “Subject, Object, Predicative, Direct Object, Indirect Object and objective complement” in a sentence?2. What can be used as “adverbial” in a sentence?3. What can be used as “verb” in a sentence?Answers to questions 1-3:1. Nouns, pronouns and appellations can be used as “Subject, Object, Predicative, Direct Object, Indirect Object and Objective Complement”. Besides, adjectives can be used as “Predicative and Objective Complement” in a sentence.2. Adverbs and prepositional phrases can be used as “Adverbial”.3. Verbs with actual meaning can be used as “Verb” in a sentence. Auxiliary verbs alone cannot be used as “Verb” in a sentence.III Learn to recognize the sentence structures.1. SV structure. For Example:(1) A bird flies.S V(2) A monkey jumps.S V(3) A fish swims.S V√ In SV structures, verbs are “intransitive verbs”.2. SVO structure. For Example:(1) A sheep eats grass.S V O(2) They like bananas.S V O(3) He wants candy.S V O√ In SVO structures, verbs are “transitive verbs”.3. SP structure. For Example:(1) This is great.S P (2) He looks well.S P (3) She became a teacher.S P √ In SP structures, Predicatives are formed by “link verbs” and “adjectives or nouns”.√ link verbs: be, become, grow, look, feel, taste, etc.4. SV IO DO structure. For Example:(1) He asked me a question.S V IO DO(2) Danny wrote me a letter.S V IO DO(3) Billy brought Sam a kite.S V IO DO√ In SV IO DO structures, the verbs are transitive and are followed by two objectives – pronouns or nouns as Indirect Objective, and nouns as Direct Objectives.
5. Read to get detailed information about Paragraph 5.Q1. What shows the revival of Tangshan?Q2. How can Tangshan revive itself and get up on its feet again?Q3. In times of disasters, how can we go through it?T: In times of disasters, we should unify, show the wisdom and stay positive.Step 4 Activity 4 Highlighting the theme and reflecting1. Make a summary of the text.2. Further understand the titleQ: After our learning, why do you think the earth didn’t sleep on that night?T: An earthquake happened. The people in the earthquake suffered a lot, and the people outside Tangshan were concerned about the people there a lot.3. Reflect through discussion on what can be learnt after reading.T: Disasters are powerful. Unpreparedness can be deadly. Life is weak, but if people work together to help each other, disasters can be defeated.There is no love from disaster, but we have love in the human heart.Step 5 Assignment How does the writer convey that the earthquake was deadly, and that people were helpless during the earthquake? Try to find some attractive and impressive expressions and note them down.
常跟双宾语的动词有:(需借助to的)bring, ask, hand, offer, give, lend, send, show, teach, tell, write, pass, pay, promise, return等;基本句型 五S +V + O + OC(主+谓+宾+宾补)特点:动词虽然是及物动词,但是只跟一个宾语还不能表达完整的意思,必须加上一个补充成分来补足宾语,才能使意思完整。 判断原则:能表达成—宾语 是…/做…注:此结构由“主语+及物的谓语动词+宾语+宾语补足语”构成。宾语与宾语补足语之间有逻辑上的主谓关系或主表关系,若无宾语补足语,则句意不够完整。可以用做宾补的有:名词,形容词,副词,介词短语,动词不定式,分词等。如:He considers himself an expert on the subject.他认为自己是这门学科的专家。We must keep our classroom clean.我们必须保持教室清洁。I had my bike stolen.我的自行车被偷了。We invited him to come to our school.我们邀请他来我们学校。I beg you to keep secret what we talked here.我求你对这里所谈的话保密。用it做形式宾语,而将真正的宾语放到宾语补足语的后面,以使句子结构平衡,是英语常用的句型结构方式。即:主语+谓语+it+宾补+真正宾语。如:We think it a good idea to go climb the mountain this Sunday.
【教材分析】本节课是高中英语第一册的最后一个单元的阅读和思考部分,文章难度明显增加,体现在以下几个方面:文章题材是说明文,比较难理解;话题生疏,涉及到历史等知识;生词量增大,而且在语境中理解词汇的要求提高。面对这些,教师的难度和高度也要有所提升,通过探讨说明顺序,了解背景知识等帮助他们找到说明文阅读的方法。【教学目标与核心素养】1. 文化意识目标新课程中指出,文化意识是对中外文化的理解和对优秀文化的认同。文化意识的的培养有助于学生增加国家认同和家国情怀,成为有文明素养和社会责任感的人。我们这个单元很好体现了这一点,通过了解汉字书写的体系和发展,学生可以有一种文化自豪感,同时也能够帮助学生深入挖掘这篇文章,从而想到更多和中国文化相关的方面。2. 学习能力目标
【设计意图】 基于上述分析,学生总结新闻故事语篇类型的特征,即标题的省略性、导语的概括性、数据的支撑性和引语的重要性。在此过程中,学生对新闻故事语篇类型有了更深层次的了解,对于学生阅读和写作具有重要意义。Activity 7: Discussing to make a writing outline.本活动为实现课时目标3。1.Discuss and make an outline.Ask students to discuss in groups of four and make their own writing outline.To celebrate the 70th anniversary of the People’s Republic of China, our school newspaper starts a new column about “People of Achievement”. You plan to write a news story about one of the winners of the Medal of the Republic in 2019, including Yu Min, Shen Jilan, Sun Jiadong, Li Yannian, Zhang Fuqing, Yuan Longping, Huang Xuhua and Tu Youyou.【设计意图】 教师创设情境,即为庆祝新中国成立70周年,校报新增有关卓有成就人物的栏目,你将从共和国勋章获得者中,选择一位写一篇新闻故事,向该栏目投稿。学生以小组合作形式,展开讨论,并写出新闻故事框架,有助于学生课后收集人物信息,撰写新闻故事。
1. 完成文本主要信息填空(斜体字部分设空):As a witness to farmers’ poor harvests and even a severe shortage of food, Yuan Longping was determined to devote his life to tackling this crisis. After graduation, he realized that what farmers needed most was to boost yields in the fields. Yuan was convinced that the answer lay in the creation of hybrid rice, one characteristic of which is that it usually achieve higher output than conventional crops. However, it was no easy job. The first difficulty he needed to overcome was scientists’ general assumption that this could not be done. Through trial and error, Yuan managed to generate this incredible crop. It is estimated that about 60 percent of domestic rice consumption in China was comprised of crops generated from Yuan’s hybrid strains. His innovation has enabled Chinese farmers to considerably expand their output and helped feed the world. Unwilling to retire early to a life of leisure and unconcerned about celebrity or fortune, Yuan continues to turn one vision after another into realities.2. 模仿写作:Do some research via the Internet and introduce another agricultural scientist, Chen Risheng(陈日胜), using the structure, expressions and writing techniques you have learnt from the text “A Pioneer for All People”.【设计意图】任务1是对文本内容和词汇学习成效的检测。任务2借助文本中学到的词汇和写作手法仿写另一位科学家,提升学生迁移运用词汇、文体结构和写作方法的能力。
[2] An important breakthrough…was… [3] Another innovation was … [4] the emphasis increasingly shifted from…to… [5] New ideas and values gradually replaced… [6] While his paintings still had religious themes… … T: All these expressions serve to show how Western painting has developed. Some of them share similar structure but with varied use of words, which makes the text vivid and more readable. 【设计意图】主题类语言整理有助于学生类化语言应用,提高语言输出的丰富性。处理完文本内容信息后,进入语篇信息处理,进行主题相关的词块归类。引导学生快速阅读,寻找表达相同主题(发展或者艺术)的词和短语,再根据词性、用法和结构进行归类,储备主题相关词汇,丰富语言储备,提升语言素养。 Assignment: Go online to gather more information about Chinese painting and write a short history of it. 【设计意图】结合所学,迁移运用,根据实际语境,进行模仿性运用。在此过程中,学生尝试借鉴已学的语言、内容、语篇结构和写作手法来建构新文本,实现语篇输出,同时关注中西艺术文化的差别,加深对优秀文化的认同,培养文化意识。
本活动旨在落实课时目标3。 Think about the following questions and talk about your own attitude in pairs.Q1: As for this topic,what impresses you the most in the passage?Q2: What do you think of the future of China’s further exploration in sea? Are you in favor of the further exploration?Why or why not? 【设计意图】该活动是一个完全开放性的活动,每个学生都会有不同的答案。运用迁移所学,自由口头表达自己对海洋探索的态度。对于中国海洋探索的未来,每个人的想法是不一样的,有乐观,有担忧,有认为值得投入,也有认为不值得付出太大代价,这里给学生自由表达的空间只要学会有支撑自己观点的事实就可以了,进一步培养学生批判性思维和正确的价值观。 Assignment: 此任务旨在迁移一、二课时所学,培养学生辩证分析问题的能力。 Write about your idea of the future of China’s sea exploration. And add your attitude towards the effort China have made in sea exploration. You’re expected to use the language and the writing technique learnt in the passage.
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