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用空间向量研究距离、夹角问题（1）教学设计人教A版高中数学选择性必修第一册
二、探究新知一、点到直线的距离、两条平行直线之间的距离1.点到直线的距离已知直线l的单位方向向量为μ,A是直线l上的定点,P是直线l外一点.设(AP) ?=a,则向量(AP) ?在直线l上的投影向量(AQ) ?=(a·μ)μ.点P到直线l的距离为PQ=√(a^2 "-(" a"·" μ")" ^2 ).2.两条平行直线之间的距离求两条平行直线l,m之间的距离,可在其中一条直线l上任取一点P,则两条平行直线间的距离就等于点P到直线m的距离.点睛：点到直线的距离,即点到直线的垂线段的长度,由于直线与直线外一点确定一个平面,所以空间点到直线的距离问题可转化为空间某一个平面内点到直线的距离问题.1.已知正方体ABCD-A1B1C1D1的棱长为2,E,F分别是C1C,D1A1的中点,则点A到直线EF的距离为 . 答案: √174/6解析:如图,以点D为原点,DA,DC,DD1所在直线分别为x轴、y轴、z轴建立空间直角坐标系,则A(2,0,0),E(0,2,1),F(1,0,2),(EF) ?=(1,-2,1),
X部门2024年上半年人才工作总结及下半年工作计划
二是提速高技能人才培养。推进XX艺才高级技工学校打造我区首个技师学院，推动建立X个新职业培训示范基地、X个技能大师工作室、X个“巴渝工匠”乡村驿站，新增X家以上企业自主评价机构，提升技能人才培养层次。力争到2024年底，全区技能人才总量达到XX万人，高技能人才总量达到XX万人。三是优化人才招聘选拔机制。有序实施全区部门下属事业单位年度招聘工作，开展教育、卫生事业单位赴高校招聘应届优秀大学毕业生，规范开展基层医疗卫生机构考核招聘，进一步做好评比达标表彰工作和创建示范活动，充分发挥表彰激励作用。四是健全联系服务专家制度。坚持把搭建事业平台、发挥专家作用作为联系服务的重点，为专家创新创业提供良好条件，组织开展区内专家休假、疗养、学术交流“三位一体”活动，探索“学养结合”服务模式，打造各领域高层次人才交流互动平台。
人教版高中地理必修2城市内部空间结构教案
过渡：在实际生活中，城市内部空间结构并非完全按照这一经济规律呈现，而是更具复杂性。这说明除了经济因素外，还有很多其他因素在起作用，请大家结合你的认识、图2．9和案例1：纽约市的少数民族区谈谈你的看法。（2）其他因素I收入——形成不同级别住宅区的常见原因。有能力支付昂贵租金和选择最佳居住环境的人，其居住地往往形成高级住宅区。II知名度——城市内某些地区在历史、文化或经济方面具有很高的声誉，这往往会吸引更多新的住宅或商场建在该处，以提高其知名度。III种族聚居区的形成——在有些城市的某一区域内，如果某个种族或宗教团体占优势，就可能形成种族聚居区。如纽约市的唐人街、哈林区、小意大利区等。IV历史因素——城市的建筑物和街道设计可以维持久远，早期的土地利用方式对日后的功能分区有着深远的影响。
中班科学课件教案：请你猜猜我是谁？
【活动目标】 1、感知人的声音及自然界中各种声音的变化。 2、运用多种方法让幼儿自己的声音发生变化。【活动准备】 1、各种声音的录音（如，下小雨声、尖细的说话声、很慢的高跟鞋走路声；下大雨声、粗重的说话声、很快的高跟鞋走路声；婴儿的哭声、幼儿的说话声、成年的说话声、老年人的说话声）。 2、眼罩一个、录音机一台。【活动过程】 一、倾听两组不同的声音，并进行比较。 1、请幼儿倾听第一段录音：下小雨声、尖细的说话声、很慢的高跟鞋走路声。提问：你听到了什么声音？ 2、请幼儿倾听第二段录音：下大雨声，粗重的说话声、很快的高跟鞋走路声。提问：你听到了声音有什么变化吗？
中班数学：花儿是我们的好朋友课件教案
2、仔细观察，大胆想象，提高思维的灵活性。 3、体验数学游戏的快乐，增强参与数学活动的自信心。活动准备： 雪花片每桌一份，幼儿人手一张数字卡，桌面各贴一个数字（1-7），教师数字卡1—7，塑料花若干，小树、小花、水梨、葡萄数量各为八个。活动过程：1、复习巩固7以内的数：（1）、-----师出示塑料花，引起幼儿种花树的兴趣，幼儿变魔术成为小花树，教师变成魔术师。------魔术师：“小花树们按照你们手里的数字，去找相应的花盆（桌子），把自己种下去！”------幼儿按照自己手中的数字寻找正确的位置。“XXX花宝宝你种 在几号花盆里啊？” （2）、游戏：《花开花落》 师：“小花树在太阳公公和雨姑姑的照顾下，开出了X朵花！” 幼儿根据教师出示的数字卡片，拿相应数量的雪花片。 （师逐一出示数字卡2、3、4。）
中班社会：我们都是好朋友课件教案
内容与要求： 1、 在唱唱、说说、学学做做中，体验与同伴一起活动的快乐。 2、 乐意参与活动，在集体面前大胆地表现自己。 活动准备： 1、已学过游戏《我们都是好朋友》 2、歌曲《找朋友》 3、已与同伴一起做过游戏。 活动过程： 1、歌曲《找朋友》 师：让我们跟着音乐一起唱起来，动起来，去找一找自己的好朋友。 放两遍音乐。 2、游戏《我们都是好朋友》 出示小鸟的头饰 师：听到你们都找到了好朋友，小鸟也飞来和你们一起做好朋友了。 （1） 边念儿歌，边做游戏。（2遍） 许多小鸟飞，许多小鱼游，小朋友，手拉手，一起向前走。拍着手，唱着歌，我们都是好朋友。
人教版高中语文必修2《我有一个梦想》教案2篇
全班齐读第五段内容。请一位同学分析，接着让这位同学按他分析的读一遍。3、4两自然段的平缓之后，第5段作者的情感再次抬升。为了满足这种情感的张扬，作一口气连用了四个排比句式“现在是……时候”，一方面这是情感发泄的需要，另一方面这种排山倒海的语势也加强了内容的表达，极强地突出了现实为自由、平等而战的重要性。四、学会演讲我们刚才细读了课文，但读和讲是有区别的。所谓演讲，是一门语言艺术，它的主要形式是“讲”，即运用有声语言并追求言辞的表现力和声音的感染力；同时还要辅之以“演”，即运用面部表情、手势动作、身体姿态乃至一切可以理解的态势语言，使讲话“艺术化”起来，从而产生一种非凡的艺术魅力。那么，接下来就假设一下假如你是马丁·路德·金，你会怎样去讲这篇演讲辞。
人教版高中语文《记梁任公先生的一次演讲》教案
十、教学后记：这是我实习中上的第一堂课，由于没有经验，对时间的把握不好，课堂前半部分留给学生思考回答问题的时间太多了，以至于没有完成本课时的教学内容，对《箜篌引》、《桃花扇》、《闻官军收河南河北》内容的补充要留到下节课才能完成。但课堂过程中以讨论和结果发布会的形式非常能调动学生的学习积极性，这节课学生的参与度很高，绝大部分的同学都能积极思考，并敢于回答问题。但是在学生回答问题后，有些答案很好，也是我没有思考到的。但是除了简单的表扬鼓励外，我不善于把学生的思考结果与自己的板书设计结合起来，授课过程中比较拘泥于教案，显得不够灵活。总的来说，这节课的优点是教态自然、大方，声音清晰洪亮，能调动学生学习的积极性，不足在于时间掌握不好，拘泥于教案。
人教版高中语文《我有一个梦想》教案
一、导入新课年纪稍大的中国人应还记得，1968年春，"文革"还正如火如荼之际，毛泽东发表了一篇"五二Ｏ声明"，全国各地为此举行了由上级组织的大规模游行。很多人应还记得，事情同马丁·路德·金被刺杀有关，而这位马丁·路德·金，乃是著名的美国黑人民权运动领袖。事过多年之后，我却发现，不少人居然把这位诺贝尔和平奖得主，同四百多年前那位德国宗教改革领袖马丁·路德相混淆，而对他的主要主张"非暴力抵抗"，更是懵然无知！1956年，在26岁的马丁·路德·金第一次领导黑人市民，抵制蒙哥马利市公共汽车公司的种族隔离制度时，他就举起了"非暴力抵抗"的旗帜。他号召久被歧视的黑人群众说："我们要抵抗，因为自由从来不靠恩赐获得。有权有势的欺压者从不会自动把自由奉献给受压者。……权利和机会，必须通过一些人的牺牲和受难才能得到。"但是，"仇恨产生仇恨，暴力产生暴力……我们要用爱的力量，去对付恨的势力。我们的目标，绝不是击败或羞辱白人，正相反，我们要赢得他们的友谊和理解。"
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 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 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
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。
新人教版高中英语必修2Unit 3 The Internet-Listening &Speaking＆Talking教案一
Listening and Speaking introduces the topic of “ask about online habits”. Many middle school students have been surfing the Internet for many years, but what they do with the Internet and how much time they spend every day may not be very clear to themselves, nor to other students. This section allows students to investigate their peers' Internet use, which is conducive to their mutual understanding and understanding of the Internet. It can also help them reflect on their own online behavior, learn from other people's good online habits, and get rid of their bad online behavior.The listening text of this section is an investigation interview. The investigators interview specific groups with the same questions to obtain information, so as to understand their views, practices or attitudes on this issue. There are two specific questions: “how much time do you spend online every day? What do you usually do online?”. The answers of the three respondents provide rich and different information, and achieve the purpose of the investigators. The oral discourse structure of survey interviews generally includes greeting and explaining the purpose of the interview, presenting the interview questions and the respondents' answers. Listening and Talking introduces the theme of “choosing the right application ". Listening text is a conversation between Laura and Xiao Bo. In this part of listening, “oink”； “piggy bank” may cause the students' hearing comprehension limitation. Oink refers to sound word and pig's sound. So, add some oink to my piggy bank is often used to describe "making a little money".1. Guide students to understand the content of listening texts in terms of listening for definitions.2. Cultivate students' ability to define words and understand an investigation interview.
新人教版高中英语必修2Unit 4 History and Traditions-Discovering Useful Structure教案一
Step 5 Practice一、完成下列句子。1. Judy and I _______________（把车停下来(park)）in an underground car Park near Trafalgar Square, where we could ______________________(让我们的车充电（charge)).2. When we finally reached the service desk to ask for audio guides, we heard it ___________ that there were no audio guides____________(留下，剩下）.3. We__________________________（发现自己对...很惊讶）the large number of visitors and the amount of noise at the entrance of the National Gallery.4. Judy ____________________(眼神专注于） Van Gogh’s Sunflowers. It was hard to approach the painting as there were so many people around.5. She ____________________(把这幅画的复制品装箱（box)） to ensure that it was delivered safely.答案：1.had our car parked get our car battery charged 2. announced left 3. found ourselves very surprised 4. had her eyes fixed on 5. had a copy of the painting boxed二、用过去分词对下列句子进行改写。1. Loch Ness was surrounded by beautiful natural landscape, which made it look amazing.2. Carl and his friend stayed with a generous family who offered them bread with butter and honey that was homemade.3. The family’s ancestors once attended to soldiers who were wounded in the First World War.4. The young people were attracted by the legend of Loch Ness. They watched over the lake with their cameras and binoculars, which were positioned on the hill.答案：1. Loch Ness surrounded by beautiful natural landscape looks amazing.2. Carl and his friends stayed with a generous family who offered them homemade bread with butter and honey.3. The family’s ancestors once attended to wounded soldiers in the First World War.4. The young people attracted by the legend of Loch Ness watched over the lake with their cameras and binoculars positioned on the hill.
新人教版高中英语必修2Unit 3 The Internet-Reading and Thinking教案一
Paragraph 3. Jan decided to start an IT club to teach old people how to use computers and the Internet. Paragraph 4. Jan has started taking online classes to learn more about how to use the Internet to make society better. Paragraph 5. Jan’s life has been greatly improved by the Internet. Step 5: Critical thinking:(1)How do you arrange your time spent on study and the Internet? Is it reasonable? I usually surf the Internet using my mobile phone for only an hour after class, and it is reasonable for me.(2)What are your online activities? Are they safe? I chat with my friends, read news and play games. I never give away my private information so I think they are safe.Step 4: summary Much has been written about the wonders of the World Wide Web. There are countless articles (1)______(tell) us how the Internet has made our lives more convenient. But the Internet has done a lot (2)_____(much) for people than simply make life more convenient. People’s lives (3) _________________(change) by online communities and social networks so far. Take Jan for example, who developed a serious illness that made her (4)_____(stick) at home with only her computer to keep (5)___(she) company. She joined an online group (6)______ she could share problems, support and advice with others. She considered the ability to remove the distance between people as one of the greatest (7)_______(benefit). She was so inspired (8)____ she started an IT club in which many people have been helped. She has started to learn more about how to use the Internet to make society better. Her next goal is to start a charity website to raise money (9)___ children in poor countries. Jan’s life has been (10)______(great) improved by the Internet. Step 5 Homework:Review what we have learned and find out the key language points in the text.
新人教版高中英语必修2Unit 4 History and Traditions-Listening＆Speaking＆Talking教案一
This unit is about history and traditions. From the opening page, we can know that this unit will introduce the history and traditions around the world. As Marcus Garvey says “A people without the knowledge of their past history, origin and culture is like a tree without roots”, it is important for students to realize the importance and value of knowing the history and traditions and their further meanings. And this part ( listening and speaking ) is divided into two parts: Part A---share views on historic sites, Part B ---talk about a visit to a historic tourist destination. By talking with a foreigner, the speakers introduce the historic attractions and their cultures. Part A is that William, a British student, who was going to visit the Confucius Temple and a Chinese student, Xiao Kong, who was going to the Confucius Temple to meet with the members of the research group, went together and exchanged their views on the Confucius Temple, Confucius, Confucius' descendants and Confucius' educational thoughts. Part B is a conversation between Xiao Yan, a youth hostel receptionist and Paul, a backpacker about the feelings and experience after visiting the Chinese famous tourist attraction Pingyao.1. Guide students to understand the content of listening texts in terms of the whole and key details; 2. Cultivate students' ability to guess the meaning of words in listening; discuss with their peers how to talk about historic spots and great person.3. Instruct students to use functional sentences of showing one’s excitement, surprise and disappointment.1. Guide students to understand the content of listening texts in terms of the whole and key details; 2. Cultivate students' ability to discuss with their peers the related topics.3. Enable students to use the functional items of showing one’s excitement, surprise and disappointment.
新人教版高中英语必修2Unit 4 History and Traditions-Reading and Thinking教案一
Features of languages1．Finally, in the 20th century, the southern part of Ireland broke away from the UK, which resulted in the full name we have today: the United Kingdom of Great Britain and Northern Ireland．该句是一个复合句。该句主句为：the southern part of Ireland broke away from the UK；which resulted in the full name we have today为which引导的定语从句代指前面整句话的内容，we have today为定语从句修饰先行词name。译文：最后，在20世纪，爱尔兰南部脱离英国，这导致了我们今天有的英国的全名：大不列颠及北爱尔兰联合王国。2．Almost everywhere you go in the UK, you will be surrounded by evidence of four different groups of people who took over at different times throughout history．该句是一个复合句。该句主句为：you will be surrounded by evidence of four different groups of people；其中Almost everywhere you go in the UK为让步状语从句； who took over at different times throughout history为定语从句修饰先行词people。译文：几乎无论你走到英国的任何地方，你都会发现历史上有四种不同的人在不同的时期统治过英国。3．The capital city London is a great place to start, as it is an ancient port city that has a history dating all the way back to Roman times．该句是一个复合句。该句主句为：The capital city London is a great place to start; as it is an ancient port city that has a history dating all the way back to Roman times．为原因状语从句；dating all the way back to Roman times为现在分词短语作定语修饰history。
新人教版高中英语必修2Unit 5 Music-Discovering Useful Structures教案一
Step1:自主探究。1．(教材P52)Born(bear) in the USA on 2 January 1970, Whitacre began studying music at the University of Nevada in 1988．2．(教材P52) Moved(move) by this music, he said, “It was like seeing color for the first time．”3．(教材P56)I was very afraid and I felt so alone and discouraged(discourage)．4．(教材P58)Encouraged(encourage) by this first performance and the positive reaction of the audience, I have continued to play the piano and enjoy it more every day．Step2:语法要点精析。用法1：过去分词作表语1）．过去分词可放在连系动词be, get, feel, remain, seem, look, become等之后作表语，表示主语所处的状态Tom was astonished to see a snake moving across the floor．汤姆很惊讶地看到一条蛇正爬过地板。Finally the baby felt tired of playing with those toys．终于婴儿厌倦了玩那些玩具。注意：1）.过去分词作表语时与被动语态的区别过去分词作表语时，强调主语所处的状态；而动词的被动语态表示主语是动作的承受者，强调动作。The library is now closed．(状态)图书馆现在关闭了。The cup was broken by my little sister yesterday．(动作)昨天我妹妹把杯子打碎了。2）感觉类及物动词的现在分词与过去分词作表语的区别过去分词作表语多表示人自身的感受或事物自身的状态，常译作“感到……的”；现在分词多表示事物具有的特性，常译作“令人……的”。
新人教版高中英语必修2Unit 5 Music-Reading and Thinking教案一
This section focuses on "learning about experiencing music Online". This virtual choir is a new form of music performance. Members from all over the world don't need to love to come to a place. Instead, they use the new technology to model the various parts and wonderful virtual harmony group of music in the family. Students need to understand the main meaning of each paragraph. Finding topic sentences is an important way to understand the general idea of a paragraph. After the topic sentence, it is usually the detail sentence that supports and explains the topic sentence. Some paragraphs have obvious subject sentences, for example, the first sentence of the second paragraph is the subject sentence of the paragraph, and the following sentenceStudents need to pay attention to the topic sentences and key sentences, and then pay attention to how the sentences after the meaning explain, explain and support the topic sentences or key sentences before.1.Guide students to learn about experiencing music online2.Guide students to scan and circle the information in the text.3.Guide students to find the numbers and dates to fill in the timeline.4.Guide students to learn more about music by completing the sentences with the correct forms of the words and phrases. And then make a mind map about the outline of the passage.1. Guide students to pay attention to reading strategies, such as prediction, self-questioning and scanning.2. Help students sort out the main meaning of each paragraph and understand the narrative characteristics of "timeline” in illustrative style.3. Lead students to understand the changes that have been caused by the Internet.
