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北师大初中七年级数学上册利用移项与合并同类项解一元一次方程教案2

  • 新人教版高中英语选修2Unit 4 Journey Across a Vast Land教学设计

    新人教版高中英语选修2Unit 4 Journey Across a Vast Land教学设计

    当孩子们由父母陪同时,他们才被允许进入这个运动场。3.过去分词(短语)作状语时的几种特殊情况(1)过去分词(短语)在句中作时间、条件、原因、让步状语时,相当于对应的时间、条件、原因及让步状语从句。Seen from the top of the mountain (=When it is seen from the top of the mountain), the whole town looks more beautiful.从山顶上看,整个城市看起来更美了。Given ten more minutes (=If we are given ten more minutes), we will finish the work perfectly.如果多给十分钟,我们会完美地完成这项工作。Greatly touched by his words (=Because she was greatly touched by his words), she was full of tears.由于被他的话深深地感动,她满眼泪花。Warned of the storm (=Though they were warned of the storm), the farmers were still working on the farm.尽管被警告了风暴的到来,但农民们仍在农场干活。(2)过去分词(短语)在句中作伴随、方式等状语时,可改为句子的并列谓语或改为并列分句。The teacher came into the room, followed by two students (=and was followed by two students).后面跟着两个学生,老师走进了房间。He spent the whole afternoon, accompanied by his mom(=and was accompanied by his mom).他由母亲陪着度过了一整个下午。

  • 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

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

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

    This happens because the dish soap molecules have a strong negative charge, and the milk molecules have a strong positive charge. Like magnets, these molecules are attracted to each other, and so they appear to move around on the plate, taking the food coloring with them, making it look like the colors are quickly moving to escape from the soap.Listening text:? Judy: Oh, I'm so sorry that you were ill and couldn't come with us on our field trip. How are you feeling now? Better?? Bill: Much better, thanks. But how was it?? Judy: Wonderful! I especially liked an area of the museum called Light Games.it was really cool. They had a hall of mirrors where I could see myself reflected thousands of times!? Bill: A hall of mirrors can be a lot of fun. What else did they have?? Judy: Well, they had an experiment where we looked at a blue screen for a while, and then suddenly we could see tiny bright lights moving around on it. You'll never guess what those bright lights were!? Bill: Come on, tell me!? Judy: They were our own blood cells. For some reason, our eyes play tricks on us when we look at a blue screen, and we can see our own blood cells moving around like little lights! But there was another thing I liked better. I stood in front of a white light, and it cast different shadows of me in every color of the rainbow!? Bill: Oh, I wish I had been there. Tell me more!? Judy: Well, they had another area for sound. They had a giant piano keyboard that you could use your feet to play. But then, instead of playing the sounds of a piano, it played the voices of classical singers! Then they had a giant dish, and when you spoke into it, it reflected the sound back and made it louder. You could use it to speak in a whisper to someone 17 meters away.? Bill: It all sounds so cool. I wish I could have gone with you? Judy: I know, but we can go together this weekend. I'd love to go there again!? Bill: That sounds like a great idea!

  • 新人教版高中英语选修2Unit 3 Food and Culture-Discovering useful structures教学设计

    新人教版高中英语选修2Unit 3 Food and Culture-Discovering useful structures教学设计

    The newspaper reported more than 100 people had been killed in the thunderstorm.报纸报道说有一百多人在暴风雨中丧生。(2)before、when、by the time、until、after、once等引导的时间状语从句的谓语是一般过去时,以及by、before后面接过去的时间时,主句动作发生在从句的动作或过去的时间之前且表示被动时,要用过去完成时的被动语态。By the time my brother was 10, he had been sent to Italy.我弟弟10岁前就已经被送到意大利了。Tons of rice had been produced by the end of last month. 到上月底已生产了好几吨大米。(3) It was the first/second/last ... time that ...句中that引导的定语从句中,主语与谓语构成被动关系时,要用过去完成时的被动语态。It was the first time that I had seen the night fact to face in one and a half years. 这是我一年半以来第一次亲眼目睹夜晚的景色。(4)在虚拟语气中,条件句表示与过去事实相反,且主语与谓语构成被动关系时,要用过去完成时的被动语态。If I had been instructed by him earlier, I would have finished the task.如果我早一点得到他的指示,我早就完成这项任务了。If I had hurried, I wouldn't have missed the train.如果我快点的话,我就不会误了火车。If you had been at the party, you would have met him. 如果你去了晚会,你就会见到他的。

  • 新人教版高中英语选修2Unit 3 Food and Culture-Reading and thinking教学设计

    新人教版高中英语选修2Unit 3 Food and Culture-Reading and thinking教学设计

    The discourse explores the link between food and culture from a foreign’s perspective and it records some authentic Chinese food and illustrates the cultural meaning, gerography features and historic tradition that the food reflects. It is aimed to lead students to understand and think about the connection between food and culture. While teaching, the teacher should instruct students to find out the writing order and the writer’s experieces and feelings towards Chinese food and culture.1.Guide the students to read the text, sort out the information and dig out the topic.2.Understand the cultural connotation, regional characteristics and historical tradition of Chinese cuisine3.Understand and explore the relationship between food and people's personality4.Guide the students to use the cohesive words in the text5.Lead students to accurately grasp the real meaning of the information and improve the overall understanding ability by understanding the implied meaning behind the text.1. Enable the Ss to understand the structure and the writing style of the passage well.2. Lead the Ss to understand and think further about the connection between food and geography and local character traits.Step1: Prediction before reading. Before you read, look at the title, and the picture. What do you think this article is about?keys:It is about various culture and cuisine about a place or some countries.

  • 新人教版高中英语选修2Unit 5 First Aid-Discovering useful structures教学设计

    新人教版高中英语选修2Unit 5 First Aid-Discovering useful structures教学设计

    You have no excuse for not going.你没有理由不去。He was punished for not having finished his homework.他因未完成作业而受到惩罚。2.动词­ing形式复合结构由物主代词或人称代词宾格、名词所有格或普通格加动词­ing,即“sb./sb.'s+doing”构成。动词­ing形式的复合结构实际上是给动词­ing形式加了一个逻辑主语。动词­ing形式的复合结构有四种形式:①形容词性物主代词+动词­ing②名词所有格+动词­ing③代词宾格+动词­ing④名词+动词­ingHer coming to help encouraged all of us.她来帮忙鼓舞了我们所有人。The baby was made awake by the door suddenly shutting.这个婴儿被突然的关门声吵醒了。Can you imagine him/Jack cooking at home?你能想象他/杰克在家做饭的样子吗?无生命名词无论是作主语还是作宾语都不能用第②种形式。Tom's winning first prize last year impressed me a lot.汤姆去年得了一等奖使我印象深刻。Do you mind my/me/Jack's/Jack leaving now?你介意我/杰克现在离开吗?Excuse me for my not coming on time.很抱歉我没能按时来。His father's being ill made him worried.他父亲病了,他很担心。We are looking forward to the singer's/the singer to give us a concert.我们盼望着这位歌手来给我们举办一场演唱会。

  • 9月1日开学第一周国旗下讲话稿:做学习的主人

    9月1日开学第一周国旗下讲话稿:做学习的主人

    老师们,同学们:大家好,今天我演讲的题目是“做学习的主人”!同学们,大夫的职责是救去世扶伤,老师的职责是教书育人,那学生的职责呢?对,勤劳学习!是啊,每一小我私家都有本身的职责。作为学生的你们也不破例,学的职责便是学习。学习便是学生的根木任务,自打你走进校园的那一刻起,你就负担起学习的任务。由于只有学习才气使你变的睿智,唯有知识才气使你日益壮大。你们是国家的将来和盼望。你们的自身本质直接决定着故国的运气,于是我们的先进梁齐超就颁发了“少年智,则国智,少年富,则国富,少年强,则国强”的“少年中国说”。以是学习对如今的你们来说,责无旁待!怎样学习呢?首先要主动学习,自主学习,做学习的主人!学习的主体是自己。只有当自己发自内心的渴望学习时,你才会积极主动的阅读,你才会认真刻苦的去钻研,你才会全身心地投入,在这种状态下,你浑身的细胞是兴奋的;你周身的血液是沸腾的;你的思维是敏捷的;你的记忆是惊人的,你的理解是深刻的;你的观点是新颖的;那么你的学习效果将是最优化的,你的收获将是最大的。所以要主动地学,自主地学,因为它是打开知识宝库的金钥匙,是穿越知识海洋到达成功彼岸的快艇;是实现远大理想的必由之路。

  • 第二学期开学安全第一课(国旗下讲话)

    第二学期开学安全第一课(国旗下讲话)

    第二学期开学安全第一课(国旗下讲话)老师同学们:大家好!今天是新学期的第一天,我们怀着激动的心情,迈着矫健的步伐回到学校,迎接新学期的挑战。今天我将利用一节课的时间围绕“安全”这个话题和大家谈起。因为安全是我们快乐学习与生活的前提,是我们每一个人的心愿。在此,我向全体同学提出以下建议,让我们行动起来,为安全而努力,让安全与我们同行。同学们,生命只有一次、健康不能重来。生命安全就掌握在我们自己手中。安全不仅关系我们个人、更关系到我们身后的家庭、学校、整个社会和整个国家。珍爱生命,增强安全意识,让快乐与幸福伴随我们的童年。今天我与同学们一起交流几个方面的安全问题。一、交通安全1、要遵守交通法规,基本常识有:行人靠右行,不闯红灯,不跨越护栏,横穿公路时要左顾右盼看是否有车辆经过,不脱把骑车,不骑“英雄”车,不跳车,不扒车。2、十二周岁以下的学生不准骑自行车。3、不乘坐黑车,因为黑车是“三无”车,有诸多不安全系数,出了安全问题,费用难以保证,更谈不上赔偿。

  • 春季开学第一周国旗下讲话稿:拥抱新学期

    春季开学第一周国旗下讲话稿:拥抱新学期

    尊敬的老师,亲爱的同学们:大家好!我今天在国旗下演讲的主题是:拥抱新学期。寒冷的冬天已经销声匿迹,我们迎来了暖暖的春季,也迎来了一个崭新的学期。我们度过了一个愉快的寒假,重返校园,首先祝同学们在新的一年里,学得轻松,学得愉快,并且学有所成。俗话说一年之计在于春,我们在春天里播撒文明、勤奋、健康、团结,会收获到明礼诚信、乐学善思、身心健康、团结友爱。收获离不开耕耘,只有辛勤耕耘,我们才能享受到进步的满足感,收获的成就感。在新学期开始之际,我建议大家要做好以下“五个心”:一为收心。寒假虽然有作业,但大多都以玩为主,开学应转变为以学为主,尽快调整心态,投入到新学期的学习生活中来。二为决心。新学期有新的开始,新的心态,主动制订学习计划,下定决心,努力实现理想。

  • 春季学期开学第一周国旗下讲话稿精选范文

    春季学期开学第一周国旗下讲话稿精选范文

    尊敬的老师们,亲爱的同学们:大家早上好!刚刚度过了一个安全、充实愉快而有意义的暑假,我们又回到了美丽的校园。伴着秋天的气息,我们迎来了新的学期,开始了紧张而又快乐的校园生活。借今天的机会,给同学提几点要求和希望。首先要加强安全防范意识,上学的路上要严格遵守交通规则,严禁在上学、放学的路上玩耍、追逐。在校时,必须严格遵守学校的各项规章制度,严禁在教室里、走廊上、活动场所追逐打闹,严禁玩弄电器插座和开关、消防栓等有危险的设备,严禁把有危险的玩具带到学校玩耍,严禁玩危险的游戏。第二,要培养勤俭节约、爱护公物的良好品格,把学校的水电、用品看作自己家里的一样爱护,看到有浪费学校水电或破坏公物的现象,每一个人都有责任加以制止或批评。要培养良好的卫生习惯,严禁随地吐痰、随地乱扔纸屑、果壳、包装袋等垃圾。要培养相互关心、助人为乐等好品质,让学校真正成为我们学习的乐园,精神的家园。 第三,要勤奋学习,不断进步。读书,就得不负父母师长的殷切希望,对得起自己的每天,通过努力去实现那志存九天的壮怀理想。希望你们明确目标、增强信心、刻苦学习,科学安排时间,坚持不懈地努力拼搏。

  • 春季开学第一课暨新学期国旗下讲话稿

    春季开学第一课暨新学期国旗下讲话稿

    老师们、同学们,大家新年好!伴随着雄壮的义勇军进行曲,鲜艳的五星红旗再次在我们眼前冉冉升起,一个充满希望的新学期已经开始了。大家刚刚经过了一个愉快而有意义的寒假,度过了一个非常值得回味的新春佳节。回首刚刚过去的一年,全体同学勤奋好学,全体教职工严谨教学。过去的一年我们全体竹中人齐心协力、勤奋学习、扎实工作,学校获得了很好的发展,同学们取得了不错的成绩。XX年高考我校再创辉煌,大批同学被高校录取,在上学期期中、期末考试中我校成绩表现良好。全体教师的专业素养得到了很好的发展和提升,在溧阳市第九批“四类优秀教师”评选中,我校有24位老师被评为“四类优秀教师”,在学科基本功竞赛和优秀课评比中,我校有10多位老师获等级奖,同时学校也承担了10多次市级学科教研活动和校际教研活动,2次学科理事会年会活动。同时,学生的特长和能力也得到了很好的彰显,在参加江苏省第十五届作文大赛中,有35位同学获奖。在初中英语口语比赛中有3位同学分别获一等奖和三等奖。在八年级“古诗文创作”比赛中有2位同学获奖,同时有不少同学被评为省、市、校级“三好学生”、“优秀学生干部”。等等。

  • 春季学期开学第一周国旗下讲话稿

    春季学期开学第一周国旗下讲话稿

    各位老师、各位同学,大家上午好!隆隆春意驱散了冬季的寒冷,万象更新孕育着新年的期望。季节的轮回带给我们的是年岁的增长,学期的更迭,经过史上最长寒假的休整,我们迎着朝阳,满怀着新的希望,迎来了XX年春季新学期的到来。今天是新学期的第一次国旗下演讲,在这样的场合,在这样的产季节——春季,必须要提起一句大家耳熟能详的谚语:一年之计在于春。我们处于花样年华,和春天是最美的组合,在春天来临的时刻,在新学期的第一天里,我们要深思熟虑,播种下春天的希望,播种下新学期儒雅阳光少年的目标,用勤奋的汗水、少年的热血和不懈的斗志让理想之花在春天盛开。春天的鲜花芬芳妩媚,盛夏的颗粒甘甜迭人,但我们需要记住的还是那一句“一份耕耘、一份收获”的至理名言,没有艰苦的付出,鲜花和掌声就会与我们无缘。希望每一位同学以自己乐观主动的态度,持久拼搏的毅力,永不服输的精神和一如既往的责任心,朝着自己的理想努力拼搏。

  • XX-XX秋季学期开学第一周国旗下讲话稿

    XX-XX秋季学期开学第一周国旗下讲话稿

    敬爱的老师们,亲爱的同学们:大家早上好!时光如流水,潺潺而下,从我们的指间悄然滑过,不留一丝痕迹,转眼间夏天已褪去了它那赤红的色彩,秋天托着长裙一步步走来,新的学期如约而至。九月,开学了,我们又迈入了校园,看着银杏飘飞,或带着不舍,或带着希望,或带着信念。告别过去,新一轮的朝阳会更加精彩。首先,我们对初一的学弟学妹们表示热烈的欢迎,欢迎你们成为龙山一中的一员,两年前的我也像在坐的你们一样,对这个新的学校充满了期待与好奇,现在,我希望你们能在这个充满书香的世界里,探索、翱游、创造、为今后的学习之路打下坚实的基础。初二是初中学习最关键的阶段,你们要矢志不移地坚持自己的梦想,化作雄鹰与飓风博击,化作野草与顽石斗争,在这段漫长而艰辛的岁月里,坚持就是决胜的关键。

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