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北师大初中数学七年级上册有理数的加法(一)说课稿

  • 大班科学课件教案:使用我们身边的工具

    大班科学课件教案:使用我们身边的工具

    活动目标:1、通过交流展示各种工具,初步感受工具的种类很多。2、在观察操作尝试中感知工具的作用很大,发展综合能力。3、能积极参与活动,在活动中体验观察和探索的乐趣。 活动准备:1、课前幼儿收集各种工具。老师和幼儿到室外寻找特殊的工具。2、卷笔刀、削苹果机,刨子,开瓶器。以及相对应的辅助用品。 活动过程:一、尝试操作使用工具1、师:“前几天老师和大家一起收集了各种各样的工具,今天让我们就来试试这些工具,看看它们有什么用。” (幼儿分别操作工具,提醒幼儿注意安全)

  • 大班科学课件教案:我们身边的手机

    大班科学课件教案:我们身边的手机

    教学过程:一、导入1、多媒体出示嘉兴手机城群众抢购手机的画面2、多媒体出示一群人在车上、家里谈论关于手机的话题3、投影出示关于手机广告的报纸  提问:小朋友,刚才我们看到一些录象、投影都与什么有关?你对手机熟悉吗?你对手机又知道些什么?·小组讨论。·集体交流。------让幼儿畅所欲言。把对手机的一些了解由教师汇总(用表格形式)

  • 大班科学课件教案:探索太空的奥秘

    大班科学课件教案:探索太空的奥秘

    二、活动准备:1、提供给幼儿介绍太空的资料:图书、录像、电脑。2、设计好的大幅“未来太空城”的图片。 3、各种大型积木,橡皮泥,彩纸,皱纸,各种废旧材料等。4、录音机、磁带。 三、活动过程: 1、感知太空。 (1)教师扮演星姐姐:“小朋友们好,我是宇宙太空的星姐姐,我知道你们很想知道我住的地方到底是什么样的,所以,今天我就邀请你们到太空去做客,你们高兴吗?那我们怎么去呢?(坐飞船、航天飞机等) (2)幼儿随音乐一起做律动“坐飞船”,然后自由地围坐在一起。 (3)查看关于介绍太空的资料,激发幼儿学习兴趣。 “现在,我们来到太空资料厅,请你们自己去查看关于太空的介绍,好吗?幼儿自由选择,借助各种媒体感知太空的奥秘。

  • 大班科学课件教案:神奇的影子游戏

    大班科学课件教案:神奇的影子游戏

    【活动准备】 1、不同形态的动物或人物的剪影。 2、自制幻灯箱一个,即手电筒,卡通外形的硬纸箱,透光纸组成的"小精灵"。 3、自制幻灯片两张,美术书一本。 4、小橡皮,黑布一块。【活动过程】 导入:老师今天带来一位新朋友,它的名字叫"小精灵",我们来认识一下他好吗?(出示灯箱)谁来说一说"小精灵"都有哪些特点? 一:光影揭秘 1、在"小精灵"的肚子里有你们想吃的、想看的和想玩的,你们相信吗?不过里面还有一个非常可怕的怪物,谁能勇敢的走上来看一看?(请一名幼儿参与)请你把小手放在"小精灵"的身上说:"我会遵守诺言,不会把所看到的东西告诉小朋友们"(请这名幼儿观看)。 2、提问:你看到了什么动物?你看到了什么物体?(边提问边看)你看到了哪些人物? 3、请一名小朋友揭示"小精灵"的奥秘。

  • 大班科学课件教案:认识声音的特性

    大班科学课件教案:认识声音的特性

    2、让幼儿知道噪音影响人的身体健康,教会幼儿养成不大声喊叫的习惯。3、丰富词:振动、噪音。活动准备:1、鼓,鼓槌,纸折的青蛙一只。2、各种操作器具:响筒、糖纸、拨弦、小铃、水杯、响板各6份。3、时钟1只,录音机、磁带。活动过程: 一、感知声音的产生(一)出示青蛙和鼓,让幼儿感知声音的振动。1、出示青蛙和鼓师:这是什么?(青蛙)谁能让青蛙在鼓面上跳舞?(敲击鼓面)2、幼儿讨论,青蛙为什么会跳动? 师:请两位小朋友上来摸一摸,鼓面有什么变化?(振动)3、知道振动能产生声音。鼓面振动还听到了什么?(声音)现在呢?振动停止,声音也就停止了。(丰富词:振动)

  • 中班棉签画教案:漂亮的大鱼课件教案

    中班棉签画教案:漂亮的大鱼课件教案

    2、观看幼儿示范,倾听教师讲解,学习在指定范围内画彩色的点,表现美丽的大鱼。   3、学会认真、耐心地进行美术活动。  活动准备:  1、幼儿用书人手一册,棉签若干,颜料盘每组2-3盘。   2、水墨画、油画棒、水彩等形式表现的各种形态的鱼。   3、在白纸上画一条鱼的线条。  活动过程:一、听谜面、猜谜语、引出主题。   教师:有头没有颈,身上亮晶晶,有翅不能飞,没脚倒能行。这是一种生活在水里的动物,请你猜一猜这是什么动物?

  • 中班主题课件教案:轮胎上花纹的秘密

    中班主题课件教案:轮胎上花纹的秘密

    2、了解生活中汽车轮胎上花纹的用处。3、初步探索轮子的形状和功能。4、喜欢了解并探索生活中存在的科学现象。活动准备:1故事录音磁带《轮胎上花纹的秘密》。2、橡皮泥、泥工板、玩具小汽车。3、大小不同的轮胎若干,并布置场地。

  • 中班主题课件教案:草地上的空罐头

    中班主题课件教案:草地上的空罐头

    1、能根据图片大胆想象,清楚讲述图片内容,发展口语表达能力。2、培养认真倾听与大胆讲述的习惯。3、懂得要保持环境卫生。二、活动准备:大挂图4套,幼儿两人一张小图片,空罐头若干。三、活动过程:(一)、出示空罐头引入,激发幼儿兴趣。师:小朋友,你们看这是什么?今天老师还带来一组图片讲的就是关于这个空罐头的。(二)、幼儿自由观察、讲述图片。指导语:请你们看看图上有谁?在干什么?1、幼儿自由观察、讲述。2、交流:你看到图上有谁?在干什么?

  • 中班语言课件教案:耳朵上的绿星星

    中班语言课件教案:耳朵上的绿星星

    活动准备:1、制作课件《耳朵上的绿星星》、故事录音带;2、教具:小草、玫瑰花、萤火虫、星星头饰;小松鼠指偶等;3、画有小松鼠图像的画纸(与幼儿人数相等)、幼儿画笔若干。活动过程:一、提出疑问,导入课题孩子们,你们你!小朋友们好!(小松鼠)哦,是小松鼠来了,咦,小松鼠你的耳朵上怎么还有星星呀?星星不是在天上吗?这是怎么回事?小松鼠:听了下面的故事,你们就知道了!请听故事《耳朵上的绿星星》!二、教师有感情的讲述第一遍故事。孩子们,你们说这个故事名字叫什么?(〈耳朵上的绿星星〉)师:小松鼠,我们的孩子说得对吗?小松鼠:对!师:那么,萤火虫为什么跑到你的耳朵上呢?小松鼠:要回答这个问题,先请你们看看我带来的图片吧!师:哟,小松鼠还给我们带了好看的图片,让我们快来看吧。三、播放课件,请小朋友欣赏,教师讲述第二遍故事。1、播放第一部分a、小松鼠上台表演节目,他想怎样来打扮自己b、小松鼠打扮了吗?(没有)为什么c、这件事情让谁看到了?(萤火虫)萤火虫怎么说的?它为什么说小松鼠真好?d、小松鼠没有戴用草编成的帽子、也没有戴用花编成的项链,那他是怎样去参加音乐会呢?2、播放第二部分a、晚上,小松鼠是怎样参加音乐会的?b、是呀!小松鼠一点也没打扮,可是幕布一拉开,台下的观众都惊呆了,他们看到了什么?

  • 7月星期一小学国旗下讲话:俭朴是美德

    7月星期一小学国旗下讲话:俭朴是美德

    老师们、同学们,星期一早上好:今天我讲的主题是《俭朴是美德》。“锄禾日当午,汗滴禾下土。谁知盘中餐,粒粒皆辛苦。”这首古诗我们耳熟能详,诗中所倡导的勤俭之风一直以来都是我们中华民族的传统美德。古代圣贤对勤俭节约推崇备至,蜀相诸葛亮在《诫子书》中就曾写下“静以修身,俭以养德”的千古名句。现在,国家正在号召把我国建设成为节约型社会,我们学校也要建设成为一个节约型校园。毛泽东主席就是艰苦奋斗、廉洁俭朴的典范。在延安时期,为节省灯油,他在考虑问题时把灯光扭小,等考虑成熟要写下来时,再把灯光扭亮。解放后,他的一件毛巾被打了73个补丁,两件睡衣上一件是67个补丁,一件是59个补丁。著名作家茅盾的书房里,始终放着一张简陋陈旧的小书桌、一盏台灯、一只砚台,生活非常俭朴,然而在去世前,他却把多年积存的25万巨额稿酬献给国家,作为“茅盾文学奖”的基金。今年春节期间,xx总理到胜利油田看望油田工人,细心的记者发现:他身上穿的一件羽绒服至少已经十年了。

  • 高一学生国旗下讲话:强健体魄,为美好人生奠基

    高一学生国旗下讲话:强健体魄,为美好人生奠基

    尊敬的各位老师、亲爱的同学们:大家早上好!我今天国旗下讲话的题目是《强健体魄,为美好人生奠基》,第一次听到“为祖国健康工作五十年”这句话的时候,我还不太明白这看似浅显的语言真正的用意,后来知道这是清华大学一句著名的口号,它旨在激发年轻学子强身健体的意识。当然,我们不是清华的学子,也还没有面对诸如“为祖国健康工作五十年”这样豪迈的目标,但拥有强健的身体却是每个人的心愿。只是,或许因为我们天生承受了上苍的厚爱,在神奇的生命构造中,我们拥有身体的全部构件,以没有缺憾的身躯享受阳光雨露,我们可以轻松行走甚至健步如飞,但这样伟大的恩赐却被当作理所当然的拥有,很多人会以这样那样的理由拒绝锻炼。是的,我们有太多的事要完成,有太多的理想要实现,但是,我们的青春真的精贵到没有时间去呵护自己的身体吗?我总是觉得,精神是理想主义,而身体是现实主义,那个广为流传的说法告诉我们,身体是1,其它财富是0,没有1,后面再多的0都没有意义。只是,对于有些人来说,他只是拥有了健全的四肢,而非健康的身体。

  • 感恩教育国旗下讲话:《心存一颗感恩之心》小学

    感恩教育国旗下讲话:《心存一颗感恩之心》小学

    本文是由编辑为您准备的感恩教育国旗下讲话:《心存一颗感恩之心》小学,请大家参考!感恩教育国旗下讲话:《心存一颗感恩之心》小学老师们、同学们:各位老师,同学们:早上好!今天我讲话的题目是:心存一颗感恩之心。俗话说“谁言寸草心,报得三春晖”,“滴水之恩,当涌泉相报”,知恩图报是中华民族的传统美德。同学们,我们要懂得感恩。我们要感激父母,感谢他们给了我们生命,感谢他们搀扶我们走好每一步人生之路,为我们搭建快乐成长的舞台。我们要感激老师,感激他们传授我们知识,让我们拥有智慧、拥有克服困难的力量和奋发图强的信心。我们也要感激在我们成长道路上循循善诱的长辈,感激陪伴我们成长的朋友们。“感恩之心”可以以不同的方式化为“感恩之行”,作出一些我们的回报。

  • 幼儿园中班美术教案:我和信封一起玩

    幼儿园中班美术教案:我和信封一起玩

    活动对象:中班幼儿   活动材料:白纸、彩笔、各种彩纸、胶水、自制信封和信封玩偶各5—6个(五六种不同的装饰风格)  活动价值:1、引导幼儿学习制作信封,变成玩偶进行装饰。发展幼儿创新能力。   2、培养幼儿良好的操作习惯,能收拾整理材料。  活动方法: 1、老师出示自制信封,让幼儿猜猜是怎么做出来的。   2、看图示,老师演示信封的做法,

  • 幼儿园中班社会教案:当一次小尾巴

    幼儿园中班社会教案:当一次小尾巴

    2、通过表演及学做不同的事情,理解帮助爸爸做事情是一件快乐的事情。   3、通过表演活动,感受做事情的快乐,乐意参与各种劳动。  活动准备:幼儿用书人手一本。  活动过程: 一、与幼儿共同建构故事内容。   教师和幼儿共同阅读幼儿用书,共同建构故事。   1、教师讲故事至:“好吧!我就来当一次你们的小尾巴”时问:你们猜猜小尾巴是什么呢?   2、教师讲故事至:“用长刷子刷起墙来”时问:你们猜小猪会做什么呢?   3、教师讲故事至:“修修枝叶”时问:你们猜猜小猪会做什么呢?   4、教师讲至:“想在院子里歇一歇”时问:你们猜小猪会做些什么呢?   5、教师继续讲故事到结束。

  • 新人教版高中英语必修2Unit 1 Cultural Heritage-Discovering Useful Structure教案一

    新人教版高中英语必修2Unit 1 Cultural Heritage-Discovering Useful Structure教案一

    This teaching period mainly deals with grammar “restrictive relative clauses.” To begin with, teachers should lead students to revise what they have learned about the relative pronouns and relative adverbs. And then, teachers move on to stress more special cases concerning this grammar, such as the “preposition+ relative pronouns which and whom” and cases where we can omit the relative pronouns. 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 exercises. 1. Guide students to review the basic usages of relative pronouns and adverbs of attributive clauses.2. Lead students to learn to use some special cases concerning restrictive relative clauses flexibly.2. Enable students to use the basic phrases structures flexibly.3. Strengthen students’ great interest in grammar learning.1. Help students to appreciate the function of relative pronouns and adverbs of attributive clauses in a sentence2. Instruct students to write essays using the proper relative pronouns and adverbs of attributive clauses.本节语法思考:定语从句在复合句中的作用是什么? 关系词有哪些?定语从句在复合句中的作用相当于形容词,它在句中作定语修饰名词或代词。他们在先行词和定语从句之间起到联系作用,同时在意义上代表先行词并在定语从句中担任一个成分。被定语从句所修饰的词称先行词,定语从句一般放在先行词的后面。

  • 新人教版高中英语必修2Unit 1 Cultural Heritage-Reading and Thinking教案一

    新人教版高中英语必修2Unit 1 Cultural Heritage-Reading and Thinking教案一

    The theme of the reading and thinking is about “Understanding how a problem was solved”.The Listening & Speaking & Talking is about international co-work to protect the Mount Tai, in which the students from seven countries came up with many solutions even create the Mount Tai App. This section aims at showing how to solve a difficult and even tough problem about protecting the cultural heritage by the international co-work. So in this section, cultivating students’ international awareness is very clear and important. Concretely, with the economic development, how to balance the protection of cultural relics and social development is a big challenge for human. In the 1950s, the Egyptian government wanted to build the Aswan Dam across the Nile to control floods, produce electricity and water farms. But the proposal led to protests because it would destroy a lot of cultural relics. The Egyptian had no choice but ask the UN for help. Therefore, a international cooperation about how to protect the cultural relics began, which involved the time length about 20 years and a large amount of fund. Then, the problems was solved. 1. Read quickly to get the main idea and the structure of the article; read careful to get detailed information.2. Learn to use the reading strategy---making a timeline3. Learn how to solve a tough problem by asking for help and cooperation4. Have the international awareness and understand the great strength of international cooperation.1. Read quickly to get the main idea and the structure of the article; read careful to get detailed information.2. Learn to use the reading strategy---making a timeline.3. Learn how to solve a tough problem by asking for help and cooperation.

  • 新人教版高中英语必修2Unit 2 Wildlife Protection-Discovering Useful Structure教案一

    新人教版高中英语必修2Unit 2 Wildlife Protection-Discovering Useful Structure教案一

    The activity topic of this section is "report an ongoing event", and the structure is the passive voice of present continuous tense. Rare wild animals are suffering from large-scale poaching, and species are on the brink of danger. Rescue operations are underway. "Being" and "suffering" are the meanings of the present progressive passive voice.The usage of present progressive passive voice is of great importance in writing a good discourse and appreciating some difficult language items, so it is vital to master it and use it flexibly in a context.1. Motivate Ss to deepen the understanding of the usage of present progressive passive voice in a fixed context.2. Enable Ss to master the usage of present progressive passive voice and use it flexibly in a context.3. Lead Ss to construct sentences or appreciate sentences used master it and use it flexibly in a context.1. Help students to appreciate the function of the usage of present progressive passive voice in a sentence2. Instruct students to write essays using the proper usage of present progressive passive voice.Look at the picture and tell me what are workers doing? What is the house being done?

  • 新人教版高中英语必修2Unit 2 Wildlife Protection-Reading and Thinking教案一

    新人教版高中英语必修2Unit 2 Wildlife Protection-Reading and Thinking教案一

    The listening and speaking part aims at how to protect and help endangered animals by listening, speaking and talking about the facts and reasons. This lesson analyzes the decreasing clause of Tibetan antelope population and the measures of protecting Tibetan antelopes. So students can be guided to learn to analyse the title and use different reading skills or strategies, like scanning, skimming and careful reading.1. Read quickly to get the main ideas and the purpose of going to Tibetan; read carefully to understand what the author see and think.2. Understand the sentences of the present continuous passive voice such as “Much is being done to protect wildlife.” and the inverted sentence “Only when we learn to exist in harmony with nature can we stop being a threat to wildlife and to our planet.”3. Enhance the awareness of protecting wildlife.4. Cultivate the reading methods according to different materials.1. Read quickly to get the main ideas and the purpose of going to Tibetan; read carefully to understand what the author see and think.2. Understand the sentences of the present continuous passive voice such as “Much is being done to protect wildlife.” and the inverted sentence “Only when we learn to exist in harmony with nature can we stop being a threat to wildlife and to our planet.”3. Cultivate the reading methods according to different materials.Step 1 Leading-inWatch a video about elephants and whales and then ask:Why are they endangered ? They are killed/hunted

  • 新人教版高中英语必修2Unit 2 Wildlife Protection-Reading For Writing教案一

    新人教版高中英语必修2Unit 2 Wildlife Protection-Reading For Writing教案一

    1. 标题首先根据海报的特点、格式写明标题。海报中往往把内容作为大标题。例如: Save the earth, Save the birds。2. 正文部分不同的海报其正文部分的侧重点不同。对于介绍性的海报, 首先要引出话题, 其次列出原因, 最后是总结。对于宣传类的海报, 要写明具体内容, 如: 活动内容, 地点以及参加活动的注意事项, 主持或举办单位等。1. 图片: 要选择引人注目的图片, 与主题要相关, 色彩明亮。话题句式 1. It is a treasure of our country. 它是我国的国宝。2. Believe it or not, at present only several thousand pandas exist in the world. 信不信由你, 目前世界上仅现存几千只熊猫。 3.It’s because of human activities that tigers are endangered. 正是因为人类的活动, 老虎处于濒危的状态。4. Many wild animals are in danger of dying out. 很多野生动物面临着灭绝的危险。 5. The government has taken effective measures to protect them. 政府已采取有效的措施来保护它们。6. People should raise the awareness of the protection of wild animals. 人们应该提高保护野生动物的意识。 7. It’s amazing that there are merely less than 1, 000 finless porpoises living in China. 非常令人吃惊, 目前中国仅有不足1 000只江豚。

  • 新人教版高中英语必修2Unit 3 The Internet-Discovering Useful Structure教案一

    新人教版高中英语必修2Unit 3 The Internet-Discovering Useful Structure教案一

    This unit is about the Internet, which has a great influence to our humans and our lives. During the Listening & Speaking & Talking and Reading and Thinking section, the influence in examples has been shown. Thus, use the Present Perfect Tense is appropriate. However, in order to show the justice or weaken the doer of the behavior/action, it’s better to use the Present Perfect Passive Voice than the Present Perfect Tense. Besides, having learned to use the Present Perfect Passive Voice, students can beautify their language in their writing. 1. Learn the structure of the Present Perfect Passive Voice and its functions. 2. Learn to change the sentences with the Present Perfect Passive Voice into the sentences with the Present Perfect Passive Voice. 3. Learn to write sentences with the Present Perfect Passive Voice flexibly according to the context. 1. Learn the structure of the Present Perfect Passive Voice and its functions. 2. Learn to change the sentences with the Present Perfect Passive Voice into the sentences with the Present Perfect Passive Voice. 3. Learn to write sentences with the Present Perfect Passive Voice flexibly according to the context. Step 1 Observe the following sentences, then change the sentences into passive voice.He has been selected to take part in the sports meeting.(肯定句)他已被挑选出来参加运动会。The ink has not been removed from his overcoat.(否定句)墨迹还没有从他外套上去掉。

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