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北师大初中数学九年级上册相似三角形判定定理的证明1教案

  • 大学安全用电管理制度

    大学安全用电管理制度

    2.细节注意问题  (1)外来人员需要得到实验中心管理人员同意后,方可进入实验机房。  (2)教室及工作人员必须按照规定的程序进行设备的操作流程。  (3)严禁在实验室吸烟、进食和随地吐痰:乱扔纸屑等:严禁大声喧哗、打闹和随意走动。  (4)进入实验室应爱护公物,不得乱写乱划,不得动用其他无关设备。

  • 初中语文《陈太丘与友期行》试讲稿_教案设计

    初中语文《陈太丘与友期行》试讲稿_教案设计

    刘义庆(403~444)南朝宋著名文学家,字季伯,彭城(今江苏徐州)人,南朝宋宗室,武帝时袭封临川王。官至兖州刺史、都督加开府仪同三司。自幼才华出众,爱好文学,喜纳文士,其撰笔记小说集《世说新语》,是六朝志人小说的代表。记叙汉末至东晋士族阶层人物的言谈轶事,生动形象地反映出当时士族的生活方式与精神面貌。语言精炼、生动传神,对后世小说影响极大。其中“周处除三害”、“望梅止渴”、“击鼓骂曹”等故事,成为后世戏曲小说的素材,“新亭对泣”、“子猷献戴”等也成为后世诗文常用的典故。梁刘孝标作注,旁征博引,为后人所重。另有《幽明录》,今佚。鲁迅《古小说钩沉》辑其佚文200余条,皆记诡异之事。

  • 初中语文《一棵小桃树》试讲稿_教案设计

    初中语文《一棵小桃树》试讲稿_教案设计

    贾平凹,1952年2月21日生于陕西省商洛市丹凤县棣花镇,当代作家。  1974年开始发表作品。1975年毕业于西北大学中文系。1978年凭借《满月儿》,获得首届全国优秀短篇小说奖。1982年发表作品《鬼城》《二月杏》。1992年创刊《美文》。1993年创作《废都》。20**年,先后担任西安建筑科技大学人文学院院长、文学院院长。20**年凭借《秦腔》,获得第七届茅盾文学奖。20**年凭借《古炉》 ,获得施耐庵文学奖。20**年3月22日,澳门大学向贾平凹颁授了荣誉博士学位。

  • 初中语文《安塞腰鼓》试讲稿_教案设计

    初中语文《安塞腰鼓》试讲稿_教案设计

    精读课本,贯通全文  提问:整篇文章极富震撼力,文章中一个排比接一个排比,一个高潮连一个高潮,大家从中体味到了什么?  明确:  A、这是一篇歌颂激荡的生命和磅礴的力量的文章。  B、全文洋溢着一种阳刚之美。  C、表现要冲破束缚、阻碍的强烈渴望。  朗读赏析探究  赏美图,配佳句——为了让大家对被誉为“天下第一鼓”的安塞腰鼓有更直观的认识,我们再来看几组特写照片。看后请各小组用课文中的文句与之相配并高声朗读。  明确:对排比句进行总结,说出对句子的理解。  怎样理解“耳畔是一声渺远的鸡声”?  ①鸡啼预示天明,是新的一天的开始,是希望的象征。  ②这是以声衬静,用鸡啼反衬火烈的鼓声停止后大地的寂静。  说美点,品美韵——这篇文章美吗?美在哪里?  语言美:  课文多用短句来表现内容;大量运用排比,有句内、句与句、段与段之间的排比,交错出现,连用许多。

  • 初中语文 《小石潭记》试讲稿_教案设计

    初中语文 《小石潭记》试讲稿_教案设计

    大家都知道,在中国文学史上有不少的文人用他们的笔墨描写过优美的山水,比如说我们以前学过:  唐 杜牧《江南春》: 千里莺啼绿映红,水村山郭酒旗风。南朝四百八十寺,多少楼台烟雨中。  杜甫《望岳》:岱宗夫如何? 齐鲁青未了。造化钟神秀,阴阳割昏晓。 荡胸生层云, 决眦入归鸟。 会当凌绝顶, 一览众山小。  郦道元在《三峡》中也有“春冬之时,则素湍绿潭,回清倒影。”这样引人入胜的景色。可以说优美的山水诗文不可枚举,那么今天让我们跟随柳宗元一起走进小石潭,看看又是怎样的一幅山水画呢?他又是怎样的心情写下这篇游记的呢?

  • 初中语文 《桃花源记》试讲稿_教案设计

    初中语文 《桃花源记》试讲稿_教案设计

    陶渊明生于东晋末朝,出身于没落的地主官僚家庭。他少时颇有壮志,博学能文,任性不羁。当时社会动乱不安,他有志不得展。做过小官,由于不满官场的丑恶,弃官回乡,这时他四十一岁,从此过着“躬耕自资”的隐居生活。忧愤、饥寒、劳累、赢疾一起折磨着他,六十三岁去世。后称靖节先生。他所作的诗文,内容多描写农村生活,表现了优美的自然风光,抒发他热爱田园生活、乐于和农民来往和不愿与统治者同流合污的高尚感情;但也包含了乐天知命、消极适世的因素。在形式上一反当时华而不实的文风,明朗清新,质朴自然,善于抓住客观事物最突出的特征,淡淡几笔传神的表现它的形象,简洁含蓄而富有韵味,对后代作家有较大的影响。本文写作年代大约是宋永初二年(421年),其时陶渊明已经五十七岁了。他拒绝同刘格的来政权合作,不满黑暗的政治现实,同时由于他和农民接近,理解他们追求理想社会的愿望,所以写了这篇记和诗。

  • 初中语文《爱莲说》试讲稿_教案设计

    初中语文《爱莲说》试讲稿_教案设计

    初读课文  了解文体,熟悉作者  文章的题目是《爱莲说》“爱”表现了作者的感情,“莲”是这篇文章写作的主体,“说” 在这里指什么?  明确:“说”是一种文体,可以说明事物,也可以发表议论或记叙事物 “说”这种文体可以灵活地运用说明、记叙和议论的表达方式,偏重于议论那么题目的意思是什么呢?可以理解为“谈谈爱莲花的道理”或“说说喜爱莲花的道理” 他爱莲花有什么道理呢?大家在学习课文中一定要开动小脑筋  本文作者周敦颐 ,(10171073) ,宋代道洲(现在湖南省道县)人,字茂叔,哲学家因他世居道县濂溪,后居庐山莲花峰前,峰下有溪,也命名为濂溪,学者就称他为“濂溪先生”

  • 初中语文 《诗经两首- 蒹葭》试讲稿_教案设计

    初中语文 《诗经两首- 蒹葭》试讲稿_教案设计

    同学们,当你听到"流浪的人在外想念你,亲爱的妈妈,流浪的脚步走遍天涯,没有一个家,……"这脍炙人口的歌词时,是否记起了那首游子思乡的千古绝唱《天净沙秋思》?当你坐在餐桌前享用精美丰盛的晚餐时,是否记起了父母"谁知盘中餐,粒粒皆辛苦"的嘱咐?当你惊叹于戈壁滩的狂风吹沙时,是否忆起"大漠孤烟直,长河落日圆"的壮志豪情?古典诗词以其不可抗拒的魅力走进了我们的生活,为我们的生活增添了更多的美丽与奇妙。今天,让我们一起学习《蒹葭》这首诗歌,再一次用诗歌滋润我们渴求的心灵。

  • 关于大学生三下乡支教教育个人心得体会八篇

    关于大学生三下乡支教教育个人心得体会八篇

    在我们教授孩子们知识的同时,也受到孩子们很多的启发。比如说,在课堂上我按照自己的备课套路跟孩子们讲课,孩子们有的时候并没有听进去。确切地说是没有听懂。作为一位准教师,我没有按照实际情况去衡量,不仅没有预想的效果,反而造成孩子厌学的情绪。经过多次授课,我们在孩子们身上反馈的信息比我们教给孩子们的还要丰富。所以有时我都觉得,其实三下乡最大的作用是教会我们这些大学生如何成长为一个合格的老师的。还有在孩子们身上学到的乐观、坚强,都是我遗失了很久的宝贝。

  • 关于大学生三下乡支教教育个人心得体会八篇

    关于大学生三下乡支教教育个人心得体会八篇

    我也是农村长大的孩子,在农村的日子就是我整个童年,虽然没有城市的繁荣和物质基础,但在农村我就是一只自由自在、欢乐无比的小鸟。走进白石小学,我仿佛又回到了我那个自由洒脱的童年。孩子们的欢声笑语,孩子们的调皮捣蛋,还有孩子们的聪明伶俐,无不让我感到开心和幸福。这种幸福感不像是亲人朋友给予的爱,而是把你带进你无法回到的过去的难忘时光。在我们安排的课程中,里面大多数是以第二课堂为主。为了吸引孩子们的注意和培养他们的兴趣,我们也是使出浑身解数,让课程变得有趣而不乏味。虽然经历了当老师的辛苦,但孩子们带给我们的欢乐和感动让我们觉得一切都值得。在我所参与的课堂中,我看到了“老师们”的窘迫,但孩子们却还是学得很认真笑得很开心。这就是我们现在无法相比的,孩子们的天真热情,单纯可爱,让我们这些最初不抱好想法的大学生感到温暖,很快,我们就融入其中了。

  • XX年国旗下讲话——一起携手,共铸班级文明

    XX年国旗下讲话——一起携手,共铸班级文明

    亲爱的老师同学们:大家上午好!今天,我演讲的题目是《一起携手,共铸班级文明》。作为学生,我们大部分时间是在学校度过的。校园是我们生活的栖息地,是我们成长的摇篮,是我们人生梦想的发射场。而教室就是我们在学校度过时间最多的地方,那是老师播种知识的圣坛,是大家拓宽思维、获取智慧、追求人生信仰的精神庙宇,更是我们了解彼止、共同切磋、一起进步的成长港湾。因此,我们要用我们的实际行动去维护它,使它因我们的存在而充满生气,因我们文明的举止和规范的礼仪而充满厚重的人文气息。课前,我们要以全新的心态准备每一堂课,以感激的心去迎接每一位老师。让他们永远伴着轻盈的铃声、迎着同学们真诚的微笑走进教室,让他们总是在同学们充满激情的“老师好”中开始新的一课。一个个灿烂的笑脸,一声声真诚的问好,能让我们真正远离麻木的习惯和冷漠的神情,能让我们跨越师生间情感的藩篱,从而走向和谐幸福的欢乐场。这微笑、这声音里更是饱含着我们对知识的渴望,对未来的憧憬与向往,对自己前途的无比信心。

  • (老师)国旗下讲话:愿我们与父母温暖相拥

    (老师)国旗下讲话:愿我们与父母温暖相拥

    在中央电视台,曾经反复播放了这样一则广告:妈妈下班回来,一脸疲惫地坐着。一个大眼睛的小男孩,吃力的端来一盆水,天真的对妈妈说:“妈妈,洗脚!”广告简单,但小男孩对母亲的那一份孝顺之情至今让人动容。孝顺父母是中华民族的传统美德。狄仁杰望云思亲,汉文帝亲尝汤药,杨香打虎救父,孟宗哭竹生笋,一个个故事,传递着孝敬父母之情,一直为人们所津津乐道。孝是什么?中国有句古话,叫做:“百善孝为先。”意思是孝敬父母位居一切美德的首位,是做人的根本。孔子也曰:“夫孝,德之本也。教之所由生也。”意思是孝敬父母是一切德行的根本,是教化产生的根源。也就是说,孝,不仅仅是关爱父母,让父母开心愉快,让父母生活幸福,更是修心养德的重要途径,是做人的根本。一个不孝顺父母的人,你还能指望他去关爱别人吗?

  • XX-XX学年第1学期第14周国旗下讲话稿:“八礼四仪”教育

    XX-XX学年第1学期第14周国旗下讲话稿:“八礼四仪”教育

    老师们,同学们,大家上午好!今天我国旗下讲话的主题是:学“八礼四仪”,让文明传承。全国都在开展文明礼仪养成教育,强调要突出抓好未成年人的“八礼四仪”,具体包括仪表之礼、餐饮之礼、言谈之礼、待人之礼、行走之礼、观赏之礼、游览之礼、仪式之礼这八个方面的礼仪教育。四仪是指7岁入学仪式;10岁成长仪式;14岁青春仪式;18岁成人仪式。这套“八礼四仪”融入了“爱、善、诚、勤、俭、美”六种理念和价值取向,注重从生活细节入手,未成年人易懂易学易做。“八礼四仪”是传承文明的需要。古老的中华民族自古以来就享有“礼仪之邦”的美称。在五千年悠久的历史长河中,不但创造了灿烂的文化,而且形成了古老民族的传统美德,很多优良的、传统的礼仪规范,直至今天仍然有很强大的生命力,它是中华民族的宝贵的精神财富。

  • 第四单元《教学设计》 说课稿  2021—2022学年统编版高中语文必修下册

    第四单元《教学设计》 说课稿 2021—2022学年统编版高中语文必修下册

    (六)说教学策略1.专题性海量的媒介信息必须加以选择或者整合,以项目为依据,进行信息筛选,形成专题性阅读与交流;培养学生对文本信息“化零为整”的能力,提升跨媒介阅读与交流学习的充实感。2.情境化情境教学应指向学生的应用,建构富有符合时代气息的内容,与生活经验更加贴合,对学生的语言建构与运用有所提升,在情境中能够有效地进行交流。3.任务化以任务为导向的序列化学习,可以为学生构建学习路线图、学习框架等具体任务引导;或以跨媒介的认识与应用为任务的设置引导;甚至以阅读和交流作为序列化安排的实践引导。4.整合性跨媒介阅读与交流是结合线上线下的资源,形成新的“超媒介”,也能实现对信息进行“深加工”,多种媒介的信息整合只为一个核心教学内容服务。5.互文性语言文字是语文之生命,我们是立足于语言文字的探讨,音乐、图像、视频等文本与传统语言文字文本形成互文,触发学生对学习内容立体化和具体化的感悟,提升学生的审美能力。

  • 新人教版高中英语必修3Unit 1 Festivals and celebrations-Discovering Useful Structure教学设计

    新人教版高中英语必修3Unit 1 Festivals and celebrations-Discovering Useful Structure教学设计

    4.That was an experience that frightened everyone. →That was _____________________. 答案:1. taking 2. being discussed 3. in the reading room 4. a frightening experienceStep 6 The meaning and function of V-ing as the predicative动词-ing形式作表语,它通常位于系动词后面,用以说明主语“是什么”或“怎么样”一种表示主语的特质、特征和状态, 其作用相当于形容词; 另一种具体说明主语的内容, 即主语等同于表语, 两者可互换。The music they are playing sounds so exciting. 他们演奏的音乐听起来令人激动。The result is disappointing. 结果令人失望。Our job is playing all kinds of music. 我们的工作就是演奏各种音乐。Seeing is believing. 眼见为实。Step 7 Practice1. It is ________(amaze) that the boy is able to solve the problem so quickly.2. Buying a car is simply _______(waste) money. 3. Please stop making the noise—it’s getting ________(annoy). 4. complete the passage with the appropriate -ing form.La Tomatina is a festival that takes place in the Spanish town Bunol every August. I think many food festivals are __________ because people are just eating. however, this festival is _________ because people don't actually eat the tomatoes. Instead, they throw them at each other! the number of people ________ part in this tomato fight, can reach up to 20,000, and it is a very __________ fight that lasts for a whole hour. The _______ thing is how clean Bunol is after the tomatoes are washed away after the fight. this is because the juice form tomatoes is really good for making surfaces clean!答案:1. amazing 2. wasting 3. annoying4. boring interesting taking exciting amazing

  • 新人教版高中英语必修3Unit 1 Festivals and Celebrations-Listening &Speaking&Talking教学设计

    新人教版高中英语必修3Unit 1 Festivals and Celebrations-Listening &Speaking&Talking教学设计

    The theme of this section is “Talk about festival activities and festival experiences”.Festival and holiday is a relaxing and interesting topic for students. This part talks about the topic from the daily life of students’. In the part A ---Listening and Speaking, there are three conversations among different speakers from three countries(Japan, Rio and China), where the speakers are participating in or going to participate in the festivals and celebrations. So listening for the relationship among them is a fundamental task. Actually, with the globalization and more international communication, it is normal for Chinese or foreigners to witness different festivals and celebrations in or out of China. In the Conversation 1, a foreign reporter is interviewing a Japanese young girl who just had participated in the ceremony of the Coming-of-Age Day on the street and asking her feeling about the ceremony and the afterwards activities. Conversation 2, Chinese girl Li Mei is witnessing the Rio Carnival for the first time, and her friend Carla gives her some advice on the costumes which enables her to match with the carnival to have a good time. Conversation 3, a Chinese guide is showing a group of foreign visitors around the Lantern Festival and introducing the customs of the festival to them. The three conversations have a strong vitality and insert the festival and cultural elements from different countries. So perceiving the festivals and cultures from different countries is the second task. At the same time, the scripts also insert the targeted grammar --- v-ing as attributive and predicative, which students can perceive and experience in a real context and make a road for the further study. That is the third task. In the Part B--- Listening and Talking, the theme is “Talk about festival experience”, which is the common topic in our daily conversations. During the conversation, Song Lin, a Chinese student, asked Canadian friend Max about how to spend Christmas. In the conversation, Song Lin talked about experience and the feelings during the Chinese Spring Festival, during which there are not only some enjoyable things but some unpleasant things. After the listening, perhaps students find there are some similarities between Christmas and the Chinese Spring Festival as there are some differences in the origins and celebrations. For example, people always visit friends and relatives, decorate their houses, have a big dinner together, chat and give presents to each other.

  • 新人教版高中英语必修3Unit 1 Festivals and Celebrations-Reading for Writing教学设计一

    新人教版高中英语必修3Unit 1 Festivals and Celebrations-Reading for Writing教学设计一

    The topic of this part is “Write about your festival experience”.During the Listening and Speaking and Talking, students are just asked to say out their festival experiences such as the Spring Festival, Mid-autumn Day, but this part students will be asked to write down their own festival experiences. During the reading part, it introduces the Naadam Festival in Inner Mongolia Autonomous Region, which can give students a good example to imitate. Students not only learn the festival, but touch and feel the Inner Mongolian’s character, the spirit and cultural atmosphere, which can help students form the cultural awareness and learn to enjoy and value the diversity of Chinese culture.Concretely, the dairy tells the experience that the author spent the Naadam Festival in Inner Mongolia Autonomous Region with his/her friend. The structure is clear. In the opening paragraph, it introduces the topic of the Naadam Festival and the whole feeling. Then it introduces the items of the festival like the ceremony, wrestling and horse racing. Finally, it summarizes this experience. Because this part is a travel journal, we must guide students pay more attention to these details: 1. use the first person. 2. use the past tense to tell the past thing and use the present or future tense to describe the scenery. 3. use the timeline to tell the development. 4. be careful for the author’s psychology, emotion and feeling, etc.1. Read quickly to get main idea; read carefully to get the detailed information about Naadam Festival.2. Learn the structure of the reading article and language.3. Write an article about a festival experience4. Learn to use the psychology, emotions and feeling in the writing.1. Write an article about a festival experience.2. Use the structure of the reading article and language.

  • 新人教版高中英语选修2Unit 1 Science and Scientists-Discovering useful structures教学设计

    新人教版高中英语选修2Unit 1 Science and Scientists-Discovering useful structures教学设计

    The grammatical structure of this unit is predicative clause. Like object clause and subject clause, predicative clause is one of Nominal Clauses. The leading words of predicative clauses are that, what, how, what, where, as if, because, etc.The design of teaching activities aims to guide students to perceive the structural features of predicative clauses and think about their ideographic functions. Beyond that, students should be guided to use this grammar in the context apporpriately and flexibly.1. Enable the Ss to master the usage of the predicative clauses in this unit.2. Enable the Ss to use the predicative patterns flexibly.3. Train the Ss to apply some skills by doing the relevant exercises.1.Guide students to perceive the structural features of predicative clauses and think about their ideographic functions.2.Strengthen students' ability of using predicative clauses in context, but also cultivate their ability of text analysis and logical reasoning competence.Step1: Underline all the examples in the reading passage, where noun clauses are used as the predicative. Then state their meaning and functions.1) One theory was that bad air caused the disease.2) Another theory was that cholera was caused by an infection from germs in food or water.3) The truth was that the water from the Broad Street had been infected by waste.Sum up the rules of grammar:1. 以上黑体部分在句中作表语。2. 句1、2、3中的that在从句中不作成分,只起连接作用。 Step2: Review the basic components of predicative clauses1.Definition

  • 新人教版高中英语选修2Unit 1 Science and Scientists-Learning about Language教学设计

    新人教版高中英语选修2Unit 1 Science and Scientists-Learning about Language教学设计

    Step 7: complete the discourse according to the grammar rules.Cholera used to be one of the most 1.__________ (fear) diseases in the world. In the early 19th century, _2_________ an outbreak of cholera hit Europe, millions of people died. But neither its cause, 3__________ its cure was understood. A British doctor, John Snow, wanted to solve the problem and he knew that cholera would not be controlled _4_________ its cause was found. In general, there were two contradictory theories 5 __________ explained how cholera spread. The first suggested that bad air caused the disease. The second was that cholera was caused by an _6_________(infect) from germs in food or water. John Snow thought that the second theory was correct but he needed proof. So when another outbreak of cholera hit London in 1854, he began to investigate. Later, with all the evidence he _7_________ (gather), John Snow was able to announce that the pump water carried cholera germs. Therefore, he had the handle of the pump _8_________ (remove) so that it couldn't be used. Through his intervention,the disease was stopped in its tracks. What is more, John Snow found that some companies sold water from the River Thames that __9__________________ (pollute) by raw waste. The people who drank this water were much more likely _10_________ (get) cholera than those who drank pure or boiled water. Through John Snow's efforts, the _11_________ (threaten) of cholera around the world saw a substantial increase. Keys: 1.feared 2.when 3. nor 4.unless 5.that/which 6.infection 7.had gathered 8.removed 9.was polluted 10.to get 11. threat

  • 新人教版高中英语选修2Unit 1 Science and Scientists-Reading and thinking教学设计

    新人教版高中英语选修2Unit 1 Science and Scientists-Reading and thinking教学设计

    Step 5: After learning the text, discuss with your peers about the following questions:1.John Snow believed Idea 2 was right. How did he finally prove it?2. Do you think John Snow would have solved this problem without the map?3. Cholera is a 19th century disease. What disease do you think is similar to cholera today?SARS and Covid-19 because they are both deadly and fatally infectious, have an unknown cause and need serious public health care to solve them urgently.keys:1. John Snow finally proved his idea because he found an outbreak that was clearly related to cholera, collected information and was able to tie cases outside the area to the polluted water.2. No. The map helped John Snow organize his ideas. He was able to identify those households that had had many deaths and check their water-drinking habits. He identified those houses that had had no deaths and surveyed their drinking habits. The evidence clearly pointed to the polluted water being the cause.3. SARS and Covid-19 because they are both deadly and fatally infectious, have an unknown cause and need serious public health care to solve them urgently.Step 6: Consolidate what you have learned by filling in the blanks:John Snow was a well-known _1___ in London in the _2__ century. He wanted to find the _3_____ of cholera in order to help people ___4_____ it. In 1854 when a cholera __5__ London, he began to gather information. He ___6__ on a map ___7___ all the dead people had lived and he found that many people who had ___8____ (drink) the dirty water from the __9____ died. So he decided that the polluted water ___10____ cholera. He suggested that the ___11__ of all water supplies should be _12______ and new methods of dealing with ____13___ water be found. Finally, “King Cholera” was __14_____.Keys: 1. doctor 2. 19th 3.cause 4.infected with 5.hit 6.marked 7.where 8.drunk 9.pump 10.carried 11.source 12.examined 13.polluted 14.defeatedHomework: Retell the text after class and preview its language points

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