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北师大初中九年级数学下册二次函数1教案

  • 新人教版高中英语必修3Unit 4 Space Exploration-Listening&Speaking&Talking教学设计二

    新人教版高中英语必修3Unit 4 Space Exploration-Listening&Speaking&Talking教学设计二

    The themes of this part are “Talk about how to become an astronaut” and “Talk about life in space”. As Neil Armstrong said “Mystery creates wonder and wonder is the basis of man’s desire to understand. Space is difficult for human to reach, therefore, humans are full of wonders about it. However, if wanting to achieve the dream of reaching the Moon, some of our human should work hard to be an astronaut at first. Part A(Talk about how to become an astronaut) is a radio interview in a radio studio, where the host asked the Chinese astronauts about his story how to become an astronaut. Yang Liwei told his dreamed to be an astronaut since childhood. Then he worked hard to get into college at 22. The next 10 years, he gradually became an experienced pilot. At the same time, to be an astronaut, he had to study hard English, science and astronomy and trained hard to keep in good physical and mental health and to practise using space equipment. Part B (Talk about life in space) is also an interview with the astronaut Brown, who is back on the earth. The host Max asked about his space life, such as his emotion about going back the earth, the eating, shower, brushing, hobbies and his work. Part A and Part B are interviews. So expressing curiosity about the guests’ past life is a communicative skill, which students should be guided to learn.1. Students can get detailed information about how Yang Liwei became an astronaut and Max’s space life.2. Students learn to proper listening strategy to get detailed information---listening for numbers and taking notes.3. Students can learn related sentences or phrases to express their curiosity like “ I wish to know...” “I’d love to know...”4. Students can learn more about the space and astronauts, even be interested in working hard to be an astronaut

  • 新人教版高中英语必修3Unit 4 Space Exploration-Reading and Thinking教学设计二

    新人教版高中英语必修3Unit 4 Space Exploration-Reading and Thinking教学设计二

    The theme of this unit focuses on “space exploration.” Students will learn about the training and experience needed to become an astronaut. The text is mainly about the development of space exploration. On the one hand, the text helps students to have a good understanding about the great feats humans have achieved, on the other hand, they will further understand the contributions that we Chinese have achieved, and feel confident and proud about our homeland and strengthen their love for our country. The teacher should instruct students to aim high and study harder to make great progress in the space career if possible.1. Read about the development and value of space exploration.2. Explore the mysteries of the universe and the achievements in space exploration.3. Skillfully use the vocabulary of this text to cultivate self-study ability 4. Develop cooperative learning ability through discussion.1. Enable the Ss to talk about the development and value of space exploration.2. Guide the Ss to summarize the main idea of each paragraph as well as the main idea of the text.3. Help Ss comprehend the main reasons for space exploration. Multi-media, textbook, notebooks.Step 1: Warming up and predictionLook at the title and the pictures of the text and predict what the text will be about?2. What are the main reasons for space exploration?

  • 新人教版高中英语必修3Unit 4 Space Exploration-Reading for Writing教学设计二

    新人教版高中英语必修3Unit 4 Space Exploration-Reading for Writing教学设计二

    ⑦在我看来, 探索太空是值得的。As far as I am concerned, it is worthwhile to explore the space.Step 10 Writing---draftRecently, students in our class have had heated a discussion on whether space is worth exploring. Students hold different ideas about it.30% of us think space exploration is not worthwhile. They think space is too far away from us and our daily life and is a waste of money. And the money spent on space exploration can be used to solve the earth’s problems such as starvation and pollution.On the other hand,70% think space is worth exploring because we have benefited a lot from it,such as using satellites for communication and weather forecast. What’s more,with further space research,we may solve the population problem by moving to other planets one day. Also,space research will enable us to find new sources to solve the problem of energy shortages on the earth.As far as I am concerned, it is worthwhile to explore the space. Not only can it promote the development of society but also enrich our life. Step 11 Pair workExchange drafts with a partner. Use this checklist to help your partner revise his/her draft.1.Does the writer explain why he/she changed/wanted to change?2.Does the writer tell how the changes have improved or will improve his/her life?3.Is the text well-organised?4.Does the writer use words and expressions to show similarities and differences?5.Are there any grammar or spelling errors?6.Does the writer use correct punctuation?

  • 新人教版高中英语必修3Unit 5 The value of money-Reading and Thinking教学设计二

    新人教版高中英语必修3Unit 5 The value of money-Reading and Thinking教学设计二

    ? Could you offer me some kind of work here?? I don’t want your charity, I just want an honest job.? Careless: I landed in Britain by accident.Step 7:Consolidation.? Find Henry? Roderick and Oliver were I .making a bet when they saw Henry, a poor young man. ? Know Henry? About a month ago, Henry was sailing and later he found himself carried out to sea by a strong wind. Fortunately, he 2.was spotted by a ship. And it was the ship that brought him to 3.England? Offer money to Henry ? Oliver and Roderick gave Henry a letter and told him that there was money in it. They 4.persuaded him to accept it, and made him 5.promise that it wouldn't be opened until 2 o'clock.Step 8:Language pointsa large amount of: a large quantity of; a great deal ofe.g. They bought a large amount of furniture before they moved their new house.make a bet: make an arrangement to risk money, etc. on an event of which the result is doubtful.e.g. We made a bet on the result of the match.permit sb to do something: allow somebody to do somethinge.g. My mother doesn’t permit me to ride in the street after it rained.by accident: as a result of chancee.g. I only found it by accident.stare at: look at somebody or something with the eyes wide open in a fixed gaze( in astonishment, wonder, fear, etc)to be honest: to tell you the truth; to be franke.g. To be honest, I don’t think we have a chance of winning.Step7 Homework:What do you think will happen to Henry? Will the bank-note help him or get him into trouble?

  • 新人教版高中英语必修3Unit 5 The Value of Money-Reading for Writing教学设计二

    新人教版高中英语必修3Unit 5 The Value of Money-Reading for Writing教学设计二

    2. 您能看到, 我头发太长了。You can see that my hair is much too long.3. 无论什么时候, 只要您想回来就回来。Please come back whenever you want.4. 您仅有很少的头发要理! You only have too little hair to cut !5. 为您服务是我的荣幸!It is my honour to serve you!Step 9 Writing(Henry is walking down the street when he sees a sign for a place that cuts hair. He decides to have it cut. )H=Henry B=BarberH: Good afternoon, I’d like to have my hair cut, if I may. (The barber looks at Henry’s hair and continues cutting another man’s hair. ) Er, I’d really like a haircut. As you can see it’s much too long. B: (in a rude manner) Yes, I can see that. Indeed, I can. H: Fine, well, I’ll have a seat then. (He sits in one of the barber’s chairs. The barber turns to look at Henry. )B: It’s quite expensive here, you know! Are you sure you can afford it?H: Yes. I think so. (After his hair is cut, the barber tells Henry how much he must pay. Henry shows the barber the bank note. )B: Why Mr. . . (looks shocked)H: Adams. Henry Adams. I’m sorry. I don’t have any change. B: Please don’t worry! (wearing a big smile) Nothing to worry about! Nothing at all! Please come back whenever you want, even if you only have too little hair to cut! It will be my honour to serve you!Step 10 Pair workExchange drafts with a partner. Use this checklist to help your partner revise his/her draft.1. Are all the elements of a play included and in good order ?2. Do the character use suitable language ?3. Are the stage directions clear and useful ?4. Is the plot clear and exciting enough ?

  • 同学聚会二十年发言讲话

    同学聚会二十年发言讲话

    二十年前,我们还是~~学校的学子,在母校的养育下,在老师们的辛勤栽培中,我们一步步的成长为一名名出色的毕业生。回顾那三年的时间,那真是一段既美好又短暂的时光,那是我们共同生活的时光。比起这二十年来,这三年的长度也许遥不可及,但是无论我们在这二十年里经历了多少,这三年,依旧是我们最为美好的记忆!

  • 初三学生新学期国旗下讲话

    初三学生新学期国旗下讲话

    同学们,老师们,大家早上好:时值金秋,凉风习习,转眼间,又是一个新学期的到来。我想这对于在座的每一位同学来讲,都应是一个崭新的起点。首先我代表初二、初三的全体同学欢迎初一的新生加入我们贵阳市第一实验中学这个大家庭。新的学期,新的开始,也孕育着新的希望与憧憬。面对即将来临的新的学习与工作,我们每一位学生都应站在新的起跑线上认真审视自己,以满腔的热情投入到新学年学习中去,为实现自身的目标而奋斗、拼搏!初一的同学们,走进实验一中,你就走进了团结和友爱,也走进了拼搏和奋斗。愿我们初一的每一位同学从开学的第一天起就百尺竿头更进一步。我相信:经过你们坚持不懈的努力和奋斗,则一定能拥有最后的收获和喜悦。初二的同学们,你们已经来到了知识高峰的半山亭, 更要珍惜每一天. 是再接再厉,勇攀高峰;还是心满意足,纵情享乐;或是畏难却步,打退堂鼓——相信在每一个人心中都一个属于自己的答案,只要我们朝着自己的目标去奋斗,我相信,最后一定能取得成功。

  • 在中学2023届高三级高考倒计时动员大会上的讲话

    在中学2023届高三级高考倒计时动员大会上的讲话

    各位老师、同学们,大家晚上好!时光荏苒,岁月不居;深秋尚未央,初冬已登场。在这黄花照暖阳的初冬美好日子,我们在**六中大礼堂隆重集会,召开****届高三倒计时动员大会,为高三级师生决胜高考、创造辉煌鼓劲加油。在此,我代表**六中全体师生向今天获得表彰的**等***名同学及高三*班等**个优秀班集体表示热烈的祝贺,向大家致以最美好的祝愿,祝愿****圆满成功、金榜题名!同学们、老师们,十年磨一剑,一朝显锋芒。今天,距****年高考仅有***天,高考报名工作即将完成。冬已临,春将至,从现在开始,我们已经进入到了高考时间,我们的逐梦征程已迈上了冲刺线,我们的奋进人生路踏上了关键拼搏点。奋斗的人生四季如歌,拼搏的生命精彩璀璨,同学们,高三是拼搏的高三,高三是冲刺的高三,高三是奋斗人生的高三,高三是奋斗人生中最值得、最需要付出的一段。在这个关键节点,在今天动员大会上,我向大家提出以下几点希望:

  • 大班科学教案:谁能穿越管子

    大班科学教案:谁能穿越管子

    活动准备: 不同形状的白色弯管若干,一段既有螺帽的尼龙线、打气筒、铅笔、手电筒若干,直管弯管若干,幼儿实验记录表若干,教师实验记表一张。 活动过程:1、出示直管。 师:这是什么?平时有什么东西可以穿越这根直管? 师:今天老师给你们带来了四样东西,它们分别是一端系由螺帽的线、打气筒、铅笔、会发光的手电筒,(一端系由螺帽的线、打气筒、铅笔、会发光的手电筒)你们来猜猜看,这些东西他们哪些能穿越直管,哪些不能?(幼儿猜测) 师:让我们动手做个实验试一试吧!老师为你们准备了实验级路标,你们可以把实验中的发现记录下来,能穿越直管的,就在表格后面这里打个“勾”如果不能得就打个“叉”。

  • 大班科学教案:水娃娃漫游记

    大班科学教案:水娃娃漫游记

    活动目标:1.通过故事“水娃娃漫游记”初步了解水娃娃的三态变化。2.鼓励幼儿想像水娃娃的漫游过程,并以小组合作形式完成水娃娃漫游图。 活动准备:1.课件《水娃娃漫游记》2.蜡笔、纸。

  • 大班科学教案:闻气味的鼻子

    大班科学教案:闻气味的鼻子

    2、教育幼儿要保护好自己的鼻子。 3、培养幼儿积极运用感官的习惯。 活动准备 不透明的容器,分别装有香水、大蒜、麻油、醋、酒、橘子等,最好每组一套。 活动过程 1、出示大象的木偶。小朋友你们说大象的鼻子有什么用处? (大象的鼻子能卷东西) 出示狗的木偶。小朋友,狗的鼻子又有什么用处? (狗的鼻子最灵)。 2、讨论人的鼻子有什么用处。 ⑴、动物的鼻子有这么大用处,那么我们人的鼻子有什么用呢?(呼吸、嗅气味) ⑵、桌上有许多小瓶子,用我们的小鼻子来闻闻,看瓶子里装的是什么。 ⑶、说说你最喜欢什么气味,不喜欢什么气味,为什么?你以前还闻过哪些有气味的东西?

  • 大班科学教案:魔法的一分钟

    大班科学教案:魔法的一分钟

    准备:1.有秒针的大钟。 2.有爷爷的图片,开心与不开心的图片各一幅。 3.《幸福拍手歌》一盘。 4.各种不快乐的小动物的图片人手一张。 过程:一.爷爷不开心,出示第一张图片。 1.“请小朋友看看,这张图片上有谁?他怎么了?” 幼:爷爷很不开心很难过 2.“你是从哪里看出来的?” 幼:爷爷的眉头皱在一起,爷爷的嘴巴不笑!

  • 大班科学教案:讨厌的沙尘暴

    大班科学教案:讨厌的沙尘暴

    [活动准备]1、观看有关沙尘暴危害的图片或录象。2、向父母了解有关沙尘暴的危害。3、向父母初步了解根治沙尘暴的措施。  [活动过程]1、组织幼儿说说风有哪些益处和害处,引出沙尘暴的话题。2、教师:“你们见过沙尘暴吗说说你的体验。”引导幼儿从风沙的声音,风沙的速度,风沙吹在人脸上的感觉,当时空气中的味道等多方面展开讨论。

  • 大班科学教案:蜡烛燃烧的现象

    大班科学教案:蜡烛燃烧的现象

    1、激发幼儿探索的兴趣,在感知蜡烛燃烧现象的过程中体验探索的乐趣。2、培养幼儿的观察力和动手操作的能力。3、知道蜡烛燃烧时会发光、发热、燃烧时需要空气中的氧气。 【活动准备】  蜡烛若干个,主蜡烛6个,大、小杯子各32个、盘子若干个、瓶子若干各个、打火机、火柴、彩色颜料。 【活动过程】1、将教室内的灯关掉,告诉小朋友停电了,教室里这么黑,我们应该用什么方法来照明?(手电筒、火柴、打火机、蜡烛)2、今天我这正好有蜡烛,我们可以用什么把蜡烛点燃?(火柴、打火机)我用打火机把蜡烛点着。点蜡烛的时候注意将蜡烛稍微倾斜一下,小心烫到手,然后把蜡烛放到桌子上。现在,小朋友的桌子上也有一些小蜡烛,我把点燃的大蜡烛放在你们的桌子上,请小朋友把自己的小蜡烛点燃。我们的教室亮起来了,刚才教室还黑黑的,为什么蜡烛点燃以后教室亮起来了呢?(因为燃烧的蜡烛会发光)  (1)呀!来电了。现在我们不需要蜡烛了,那我们用什么方法将这些蜡烛熄灭呢?(用嘴巴可以把蜡烛吹灭、用扇子扇也可以将蜡烛扇灭、把蜡烛拿到外面让风一吹也会熄灭、把蜡烛放在水里就熄灭了、用沙子、用土)  (2)我这有一个玻璃瓶,我想用这个玻璃瓶能将蜡烛熄灭,你们说我能做到吗?我该怎么做?请小朋友帮我想个办法。

  • 大班科学教案:认识整点、半点

    大班科学教案:认识整点、半点

    活动过程:一、调动已有经验,回忆相关知识。1、前段时间我们小朋友和老师一起做了有关时钟的调查,知道时钟有好多好多种。现在请你看看老师从网上下载的钟,看看你认识它吗?2、依次出示幻灯片,幼儿讲名称。3、刚才我们所见到的只是时钟家族的一部分,它可能还有其他的种类,我们以后再来探讨。4、上次我们已经认识过钟面,来告诉大家,最长的针叫(秒针),有点长的针叫(分针),最短的针叫时针。钟面上一共有多少个数字(12),最上面的是数字12,然后依次是1、2……11。请你好好回忆一下,时钟里的指针是朝哪一个方向走的?(1……12)对了,这样的方向就叫顺时针方向。

  • 大班科学教案:物体间的空隙

    大班科学教案:物体间的空隙

    三、适用对象:5~6岁幼儿。四、活动所需资源;每组一个托盘,盘内有一个空广口玻璃瓶、一碗石头(10块左右)、2/3碗小石子、l/3碗沙子、1/3碗水(矿泉水瓶也可)、一把小勺、一根筷子、画有玻璃瓶轮廓的记录纸和笔、指偶小兔。五、活动过程:让幼儿观察桌上摆放的实验用品:石头、小右子、沙子和水、一把小勺、一根筷子、画有玻璃瓶轮廓的纸和笔。说一说,石头、小石子、沙子和水有什么不同。

  • 大班科学教案:物体移动的秘密

    大班科学教案:物体移动的秘密

    教学准备:1、各种形状不同的纸盒,积木;球、折纸、纸板。2、铁哑铃二对,大矿泉水二瓶(圆形),大木箱一只。3、粗细绳子若干,棒或木棍若干。4、滑轮二付。5、录像。教学过程:(一)激发幼儿积极参与的兴趣1、介绍物品。师:桌子上摆着许多东西,不认识的东西大家一起来告诉你。(重点介绍:滑轮)2、布置任务。师:这些都是物体,现在这些物体有没有动。(没有)。今天老师就请你来想办法,使这些物体移动位置,看谁想的办法最多。但有个要求,玩时不要拥挤,要相互谦让,并要把玩的方法记住,待会儿告诉大家。(二)幼儿动手操作,探索不同的力与物体运动的关系。1、幼儿操作,教师个别指导,注意发现与众不同的方法。2、提问:(幼儿表达,也可上来边操作边讲)(1)你是用什么方法移动这些物体的?(幼儿回答)小结:刚才有的小朋友用自己的手推、拉、拍、有的用嘴吹,还有的小朋友用脚踢使物体移动,这说明要使物体移动必须要用力。(2)样一件物体(出示皮球),你们用力大和用力小的时候,物体移动的一样吗?(幼边操作边表达)小结:对同样一件物体,用力大物体动的又快又远,用力小,物体动的慢,滚的也不远。

  • 大班科学教案:泥土里有什么

    大班科学教案:泥土里有什么

    1、在温暖的天气里,带幼儿到田野或草地上去玩,让幼儿用小铲挖土,自由地进行探索。教师启发引导幼儿: 找一找:泥土上面有什么? 挖一挖:泥土下面有什么? 筛一筛:泥土里面有什么?可以将自己发现的东西(草根、小草、小花、小虫等)装进塑料袋或小桶里。 看一看:泥土里什么颜色的? 摸一摸:有什么感觉? 捏一捏:泥土会变成什么样? 嗅一嗅:泥土有什么气味? 2、讨论 全班幼儿一起将自己在泥土中找到的东西倒出来,然后进行讨论: 你在泥土中发现了什么? 泥土中为什么会有小草、小虫等?

  • 大班科学教案:水的三态变化

    大班科学教案:水的三态变化

    2.那用语言表达自己观察到的水的三态变化。  3.用多种感觉和体验水的变化的有趣和好奇。  活动准备:电热水壶一个、2人一块冰  活动过程:  *小实验:水→蒸气:在孩子共同关注下,观察烧开水,水和蒸气互变现象,看看电热水壶口往外冒气时,把一个盘子放在壶口上会发生什么现象,观察蒸气凝成的小水珠。蒸气→水:看看盘子上有什么,小朋友可以把手掌触摸蒸气感受手的潮湿。  *让孩子看一看、闻一闻、摸一摸冰块,感知冰的特性,说一说冰块放在手心有什么感觉,你能拿冰块多久,看看冰块有什么变化?为什么会有这种变化?  *小朋友很喜欢冰块,这些冰块被小朋友玩到融化了,你们回家可以做许多式样的冰块:彩色冰块、豆豆冰块、模型冰块…… 活动延伸:  *孩子非常喜爱冰棍,由此引导孩子去探索冰凝固和冰融化的奥秘,既能染孩子进一步了解、感知冰的特征,有能满足孩子好奇心和求知欲,促进家园互动。  *小朋友回家做冰块玩。  活动过程的对话:  孩子们看到老师准备电热水壶,又打了水,都围起来看。  荣一郎说:“水是软软的。”小实验开始了,插电加热,很快水开了。  陈新说:“水壶唱歌了。”  张俊骞说:“水壶的嘴巴冒气了”。  老师说:“水壶的嘴巴冒气了,这个现象我们叫它什么?”  有小朋友说冒烟、  有小朋友说烧开水,  蓝钧说是小乌龟,与水联系上了。

  • 大班科学教案:水流到别的杯子去

    大班科学教案:水流到别的杯子去

    1:提供不同材料,建议幼儿思考如何使沉入水中的材料浮于水面,或使浮于水面的材料沉入水中。如用牙膏皮做成小船,或将小铁钉放在积木上等。沉与浮  2(立起来的木棍):将小木棍放入水中,发现它躺在水面上。如果在木棍一端粘一大块橡皮泥,或钉上一根大铁钉,都能使它立起来。  活动目标:使用多种材料,玩水的过程充满和有趣。  活动材料:饮料管、纸、牙膏皮、泡沫塑料、小积木、塑料、菜叶、小瓷器、竹片、铁钉、小石子水管、竹片、盛水具、彩色墨水等  活动过程:下午天气热,小朋友都在玩水。今天材料很丰富,但给出一个条件,每人只给一盆水,要节约用水,用完就没有了。用水管连接水的有3组、用大小杯子滔水的有2组、用矿泉水瓶盖扎洞来射水有3组、做水帘洞1组、沉浮和自定义玩法有几组。  “水流到别的杯子去”组;佘馨蕊、张俊骞、覃芷珊、卢艺文、班学佳  *这几个小朋友,把2根管子把3个杯子连接起来,慢慢地将一杯红色的水倒在水杯里玩,发现杯里的红水通过连接饮料管子流到另一个水杯,3杯水慢慢变红了,孩子们高兴极了,饮料管子传送水耶,3杯红水第一次出现流动成水平,水不流动了。

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