高中英语 Spring Festival教学素材 新人教版必修3

第一篇：高中英语 Spring Festival教学素材 新人教版必修3

浙江省杭州市塘栖中学高中英语 Spring Festival教学素材 新人教

版必修3 The New Moon on the first day of the new year--the full moon 15 days later Chinese New Year starts with the New Moon（新月）on the first day of the new year and ends on the full moon（满月）15 days later.The 15th day of the new year is called the Lantern Festival（元宵节）, which is celebrated at night with lantern displays and children carrying lanterns in a parade.The Chinese calendar is based on a combination of lunar and solar movements.The lunar cycle（月运周期）is about 29.5 days.In order to catch up with the solar calendar the Chinese insert an extra month once every few years(seven years out of a 19-yearcycle).This is the same as adding an extra day on leap year（闰年）.This is why, according to the solar calendar, the Chinese New Year falls on a different date each year.New Year's Eve and New Year's Day are celebrated as a family affair, a time of reunion and thanksgiving.The celebration was traditionally highlighted with a religious ceremony given in honor of Heaven and Earth（万物）, the gods of the household and the family ancestors.The sacrifice to the ancestors, the most vital of all the rituals（仪式）, united the living members with those who had passed away.Departed relatives are remembered with great respect because they were responsible for laying the foundations for the fortune and glory of the family.The presence of the ancestors is acknowledged on New Year's Eve with a dinner arranged for them at the family banquet table.The spirits of the ancestors, together with the living, celebrate the onset of the New Year as one great community.The communal feast called surrounding the stove or weilu.It symbolizes family unity and honors the past and present generations.The Origin of Chinese New Year The Chinese New Year is now popularly known as the Spring Festival because it starts from the Begining of Spring(the first of the twenty-four terms in coodination with the changes of Nature).Its origin is too old to be traced.Several explanations are hanging around.All agree, however, that the word Nian, which in modern Chinese solely means year, was originally the name of a monster beast that started to prey on people the night before the beginning of a new year.One legend goes that the beast Nian had a very big mouth that would swallow a great many people with one bite.People were very scared.One day, an old man came to their rescue, offering to subdue Nian.To Nian he said, I hear say that you are very capable, but can you swallow the other beasts of prey on earth instead of people who are by no means of your worthy opponents? So, it did swallow many of the beasts of prey on earth that also harrassed people and their domestic animals from time to time.After that, the old man disappeared riding the beast Nian.He turned out to be an immortal god.Now that Nian is gone and other beasts of prey are also scared into forests, people begin to enjoy their peaceful life.Before the old man left, he had told people to put up red paper decorations on their windows and doors at each year's end to scare away Nian in case it sneaked back again, because red is the color the beast feared the most.From then on, the tradition of observing the conquest of Nian is carried on from generation to generation.The term Guo Nian, which may mean Survive the Nian becomes today Celebrate the(New)Year as the word guo in Chinese having both the meaning of pass-over and observe.The custom of putting up red paper and firing fire-crackers to scare away Nian should it have a chance

第二篇：高中英语：Unit 5 Canada—The True North Reading(新人教必修3)

高一英语同步练习：

Unit 5 Canada—The True North

第2课时Reading 基础练习

1.阅读课文，判断以下句子的描述是否与文章相符。（用Ｔ／Ｆ来表示）1.They went to see their cousins in Vancouver.2.You can cross Canada in less than 5 days by train.3.The girls looked out oｆthe windows and saw Native Indians and cowboys.4.They traveled in Canada from east to west.5.Canada is the biggest country in the world.6.Canada has one-third of the world’s fresh water.实战演练

一.根据课文内容用适当的词或词组填空：

Li Daiyu and Liu Qian took the train in Canada from ___ to____.Their cousins’ friend, Danny Lin, took them to the train station to catch“_________”.Canada is the _____ biggest country in the world.It is 5,500 kilometres from ____ to____.As they go ____, they saw beautiful scenery as well as cities.Vancouver is _______ by mountains on the north and east.When the cousins _________in the seats, they looked out of the window.They saw ___________ and even a bear.Calgary is famous for its competition.Many of the cowboys from all over North America _________working with animals.Then they______ a wheat-growing province.Thunder Bay is a busy port.It is _____ the center of the country.That night they slept as the train rushed towards _______.二.单项选择

1._____ of the village ______two small lakes.A.The east；lie

B.East；lies D.East；lie C.The east；lies

2.Seeing the happy ____ of children playing together there, I am full of joy.A.view B.sight C.sign D.scene 1 3.The total cost of their trip to Canada ________$5 000.A.added up to

B.added up C.added to

D.was added up to 4.The question came up at the meeting _____we had enough money for our research.A.that B.what C.which D.whether 5.The young man went _____the woods，swam_____ the river and came to a small village.A.in；across

B.through；across

D.into；through C.through；over

6.Finally, he ___to get out of trouble with no one helping him.A.offered

B.attempted

C.managed D.succeeded 7.John plays football______________, if not better than, David.A.as well

B.as well as

C.so well

D.so well as 8.Word came _______ the students would put off the outing until next week, when they wouldn’t be busy.

A.that B.when

C.which

D.whether 9.The _____ look _____ her face suggested that she was scared.

A.amazed;in

B.amazed;on

C.amazing;in

D.amazing;in 10.The child had only a ___ temperature, but the doctor thought the illness was serious enough for hospital treatment.A.slightly

B.lightly

C.slight

D.narrow 11.–We have wasted a lot of time ___here.Now we ought to come to the point.--OK.Let’s begin.A.chatted

B.chatting

C.having chatted

D.to chat 12.Peter received a letter just now ____ his friend would come to China.A.saying

B.said C.says D.to say 13.That river ___250 kilometres long and 60 metres wide.A.measures

B.measure

C.measured

D.measuring 14.Catching ___sight of policemen coming, the thief swiftly went out of ___sight

A.the;the

B.the;/

C./;the

D./;/ 15.The wild flowers looked like an orange blanket ___ the desert.A.covering

B.covered C.cover

D.to cover

三.根据汉语意思完成句子

1.The house ________________.警察包围了这幢房子。2._______________ on the tree.树上只剩下几片叶子了。3.He ____________ music.他有音乐天赋。

4.He preferred_______________ rather than __________.他宁愿坐在家里看电视也不愿去听音乐会。

5.______ the population of China in 2000?中国在2000年的人口是多少？

6.___________, many foreigners ______ in China.随着中国经济的发展，许多外国人定居中国。

反馈检测

阅读短文并选出最佳答案。

A OTTAWA — Canada’s western city of Calgary is the world’s best city when it comes to healthy living, local press reported Monday.According to an international survey by Mercer Human Resource Consulting, a London-based consulting firm, Calgary was put at the top of a list of 144 cities.It scored 121 points, just above Honolulu’s score of 120.Helsinki（赫尔辛基，芬兰首都）and Ottawa followed at 119.5 and 118.5 respectively.Three other Canadian cities came in the top 20.Montreal and Vancouver tied for ninth and Toronto came in at 18th.The scores are based on air pollution levels, availability and quality of hospitals and medical supplies, as well as the efficiency of waste removal and sewage systems.3

In America, the lowest scoring city was Atlanta, which was ranked 76th.Athens was the lowest scoring city in Western Europe, ranking 120th because of its air pollution.London was ranked 59th.1.How many Canadian cities are in the top 20? A.3.B.4.C.5.D.6.2.Which of the following is NOT taken into account when the cities were scored? A.Weather conditions.B.Air quality.C.Waste removal.D.Medical supplies.3.Among the following cities, which is the lowest scoring one? A.Atlanta.B.Athens.C.London.D.Helsinki.B Canada is one of the few nations in the world that have two official languages：English and French.There are 10 provinces in the country but only one of these—Quebec is known as “French Canada”.This is because it was founded by French explorers while British adventurers discovered the rest.Canada left the British empire in 1867 to become an independent country，and English and French have become the official languages ever since.Most people speak English as their first language and the two national television networks broadcast in English throughout the country.Apart from in Quebec and a few places on the east coast，French television is very rare.The same goes for traffic signs and menus，for example，outside of Quebec，there are only a few places where you’ll see traffic signs in French.In restaurants，it’s almost impossible to find French on the menu unless you are in the heartland of French Canada.However，it is claimed by law thay all products sold in Canada must have labels and instructions in both languages.In Canada’s English speaking provinces，official bilingualism(双语)means that students can choose to complete a special French language course.Under this programme，they are taught most of their subjects in French.If a student begins the course in kindergarten or Grade One，it is likely that all their lessons will be in French.However，if they start at junior high school，25 percent of the teaching will continue to be in English.4.How many provinces are there in Canada? A.Ten.B.Nine.C.Eleven.D.Two.5.Which country controlled Canada before its independence? A.France.B.Britain.C.America.D.Germany.6.Where can you watch French television programmes? A.Only in Quebec.B.In Quebec and a few other places.C.From the two national television networks.D.All over Canada.7.What about the education in Canada? A.In English speaking provinces only English courses are offered there.B.If you choose a special French language course，most of the subjects are taught in French.C.The courses in primary school are all taught in English.D.Most of the courses in junior high schools are taught in English.8.Which of the following sentences is right? A.English is the only official language，though French is also spoken there.B.The two national television networks broadcast both in English and French.C.All products sold in Canada must，by law，have labels and instructions in both English and French.D.The lessons in kindergarten or Grade One are likely to be only in English.第2课时reading 5 基础练习

阅读课文判断以下句子描述是否与文章相符 1.F 2.F 3.F 4.F 5.F 6.T 实战演练：

一根据课文内容填空

west, east, The True North, second, coast, coast, eastward, surrounded, settled down, mountain goats, have a gift for, went through, close to, Toronto.二单选1.D 2.D3.A 4.D 5.B 6.C 7.B 8.A 9.B 10.C11.B 12.A 13.A 14.D 15.A 三翻译句子

1.was surrounded by the police.2.Only a few leaves remained.3.has a gift for

4.to stay at home watching TV, go to the concert.5.What is

6.With the development of Chinese economy, have settled 反馈检测： 阅读理解

1C 2.A 3.B 4.A 5.B 6.B 7.B 8.C

第三篇：高中英语必修3教学工作计划

2011—2012学第一学期

教学工作计划

本学期本人任高二(5)、(6)班的英语教学工作。在本学

期的高二英语教学工作中，要以学校工作计划为指导思想，以培养学生自主学习和自主管理能力为主线，全面贯彻落实新课程改革的精神，针对我校高一新生普遍英语底子差，基础薄的实际，坚持“夯实基础，狠抓双基，改进学法，激发兴趣，提高能力”，特制定本期教学工作计划。

一、教学理念

1、要面向全体学生，关注每个学生的情感，激发他们

学习英语的兴趣，帮助他们建立学习的成就感和自信心，使他们在学习过程中发展综合语言运用能力，提高人文素养，增强实践能力，培养创新精神;

2、突出学生主体，尊重个体差异，让学生在老师的指

导下构建知识，提高技能，磨练意志，活跃思维，展现个性，发展心智和拓展视野;

3、让学生在使用英语中学习英语，让学生成为Good

User而不仅仅是Learner。让英语成为学生学习生活中最实用的工具而非累赘，让他们在使用和学习英语的过程中，体味到轻松和成功的快乐。高二英语既注重基础知识的考查，又强调能力的灵活运用。为了适应这一趋势，提高高二英语的教学质量，在高二英语教学中我将常抓基础知识，有梯度 1

地拓宽词汇，提高课堂效率，从而努力提高学生学习的自觉性、主动性与积极性，通过师生互动，更进一步提高英语成绩。

二、学生分析

从学生高一期末考试情况来看，这两个班学生存在以下三方面问题：在思想上、态度上放松或放弃的现象有所表露，读,不会读，就谈不上听得懂,看得懂,从而导致破罐子破摔的现象。基础知识不够扎实，灵活运用语言的技能相对薄弱。运用能力不够强实。学生的阅读能力、理解能力、分析能力、判断能力、应变能力等均不能较好地适应考查要求。语言学习的关键在于语言知识的积累，只有通过学习者亲身的体验和摸索，才能学会并掌握语言知识，从而达到在交际中灵活使用语言的目的。

三、教材分析

该册教材从不同方面具有如下特点：

1、内容丰富，涉及面广。本册教材的课文篇幅长、题材广，内容丰富，不但是一个综合知识的大熔炉，而且时代气息逼人，很具有挑战性。学生不但可以学到真实的英语语言，而且可以学到广泛的综合知识，训练全面的英语语言技能。说句实在话这套新教材对我们英语任课教师无论从语言知识而是语言技能上都展开了挑战。

2、词汇量大，语言地道。由于所选文章涉及的领域多，又是原汁原味，因此，各方面的词汇都出现了。又由于沿用地道的原文，不同作者用词不同，出现了大量的近义词。虽然这给学生提供了学习英语的真实语言环境，但也增加了学生学习英语的难度。

3、精心编排，形式新颖。教材编排的匠心不但体现在课文内容的精心选编和课型的优化设计。特别突出的是教材的各种练习形式新颖别致，不但注重知识性，而且充分注入了趣味性。也充分发挥了现代教育技术在英语学习中的先进作用。

4、理念先进，实践标准。该册教材把综合语言运用能力的形成建立在语言技能、语言知识、情感态度、学习策略和文化意识等素养整合发展的基础上。也把语言技能的形成作为语言学习的必须手段。完全实践了《普通高中英语课程标准》的新理念。

四、本学期的教学目标及措施

高二年级是高中的重要阶段，又是高中三年的承上启下阶段。因此，让学生在高二年级打好学科基础并有所发展是极其重要的。下列目标应在本学期内达到：巩固、扩大基础知识;培养口头和书面初步运用英语进行交际的能力，侧重培养阅读能力;发展智力，培养自学能力。争取在原有基础上有所提高，缩小与上学期期末考试时平均分排在我们前面的几个理科班的差距。根据教学步骤完成模块5及模块6的教学内容，根据学生的实际情况对教材练习适当做出调整，删减。让复杂问题简单化，使学生更容易掌握所学知识。加大学生的阅读量。提高阅读速度。

此外，在本学期高二英语教学计划中，要狠抓基础及单词、句型及语法等，扎实基础知识，突击写作训练，为高考打下扎实的基础。具体方法如下：

1、钻研并创造性地利用教材，灵活使用，发挥教材特点。

2、内容要求学生一定要过词汇关，反复朗读、默写单词、以便加强学生对基础知识的掌握。摒弃不切实际的教学步骤，抓重点，搞强化，在日常教学中渗透语法意识。利用教材提高学生的基本功，坚持默写单词及重点句型。

3、本学期仍要坚持训练学生的听力和并开展任务型写作教学。扎实写作常用句型的同时，要求向句群篇章背诵过渡，培养良好的学习习惯和写作基础。

4、培养学生的阅读能力，并以这些材料为基础，扩充学生词汇量，做到每学完一篇课文，就进行词汇检测。拓宽教材，扩展学生阅读量，努力补充学生的词汇。在平时教学过程中不断扩大学生的词汇量，词汇教学以新带旧，从而达到巩固扩充词汇的目的，做到经常督促、检测。

5、加大基础写作训练的力度，大力鼓励学生学以致用。并要求学生背范文、教师精选的课文段落、写作必背句型，使学生熟悉英语的句式结构及习惯用法，从句到篇，从而写出完整的英语文章。另外每周进行一篇的写作训练，鼓励运用背过的句型，提高学生的写作能力。

6、综合检查。准备每一单元做一次练习，主要以结合当前教学内容为主要测试内容, 间或分块测试，习题的训练在于精而不在于多。在教学中尽量按照高考的知识体系有针对性地选择典型性题目。针对共性问题进行精讲，让学生在书本中找到解决问题的源泉，学会思考、整理和归纳。

综上所述，高二年级的教学工作是非常关键的，我会尽职尽责完成本职工作，再接再励，取得更好的成绩。、

第四篇：高中英语 Carnival教学素材 新人教版必修3

浙江省杭州市塘栖中学高中英语 Carnival教学素材 新人教版必修3 Carnival is a festive season which occurs immediately before Lent;the main events are usually during February and March.Carnival typically involves a public celebration or parade combining some elements of a circus and public street party.People often dress up or masquerade during the celebrations.Carnival is mostly associated with Roman Catholic and, to a lesser extent, Eastern Orthodox Christians;Protestant areas usually do not have carnival celebrations or have modified traditions, like the Danish Carnival.The world's longest carnival celebration is held in Brazil but many countries worldwide have large, popular celebrations, such as Carnaval of Venice, or the world famous Trinidad and Tobago Carnival.An inspiration for the carnival lies in the fact that during Lent, traditionally no parties may be held and many foods, such as meat, are forbidden;the forty days of Lent serve to commemorate the Passion of Jesus.It is natural for people to have the desire to hold a large celebration at the last possible opportunity before fasting.Parts of the carnival traditions, however, likely reach back to pre-Christian times.The ancient Roman festivals of the Saturnalia and Bacchanalia is a probable origin of the Italian Carnival.The Saturnalia, in turn, may be based on the Greek Dionysia and Oriental festivals.While medieval pageants and festivals such as Corpus Christi were church sanctioned celebrations, carnival was a representation of medieval folk culture.Many local carnival customs are also based on local pre-Christian rituals, for example the elaborate rites involving masked figures in the Swabian-Alemannic carnival.In Christianity, the most famous traditions, including parades and masquerading, are first attested from medieval Italy.The carnival of Venice was for a long time the most famous carnival.From Italy, carnival traditions spread to Spain, Portugal, and France.From France, they spread to the Rhineland of Germany, and to New Orleans.From Spain and Portugal, they spread to Latin America.Many other areas have developed their own traditions.

第五篇：高中数学《条件语句》文字素材4 新人教B版必修3

必修3“条件语句”的教学实践与反思

一、教材分析

1、教学内容的地位和作用

算法是设计高中数学课程的一条主线，程序是由若干算法语句组成的有序集合。“算法语句”是继“程序框图”之后学习的内容，是解决某一个（或某一类）问题的算法的程序实现。在此之前，学生已学习了算法的概念、程序框图与算法的基本逻辑结构、输入语句、输出语句和赋值语句,这为过渡到本节的学习起着铺垫作用。对于顺序结构的算法或程序框图，我们可以利用输入语句、输出语句和赋值语句，写出其计算机程序，对于条件结构的算法或程序框图，要转化为计算机能够理解的算法语句，我们必须进一步学习条件语句。条件语句与程序框图中的条件结构相对应，它是五种基本算法语句中的一种,通过本节课的学习，学生将更加了解算法语句，并能用更全面的眼光看待前面学过的语句，并为以后的学习作好必要的准备。本节课对学生算法语言能力、有条理的思考与清晰地表达的能力，逻辑思维能力的综合提升具有重要作用。

学习算法的目的，不是学习程序设计语言，而是体会算法的基本思想以及算法的重要性和有效性，算法学习能够帮助学生清晰思考问题，提高逻辑思维能力；有助于学生全面的理解运算；有助于提高学生的信息素养。《新课标》要求学生“经历将具体问题的程序框图转化为程序语句的过程，理解几种基本算法语句----输入语句、输出语句、赋值语句、条件语句、循环语句，进一步体会算法的基本思想。

2、教学重点和难点

重点：条件语句的基本格式、种类以及应用，与条件结构的关系 难点：条件语句的应用，会编写程序中的条件语句.二、目标分析

1、知识与技能

知识目标：理解基本算法语句---条件语句，以及与条件结构的关系，初步体验如何由程序框图转化为程序语句。

条件语句的两种形式如下：

IF 条件

THEN

IF 条件

THEN

语句体1

ELSE

语句体

语句体2

END IF

END IF

能力目标：通过条件语句的学习，了解条件语句在解决问题中的应用，进一步体会算法的基本思想。

2、过程与方法

采用“案例教学“，从具体的学生熟悉的实例出发，在具体的情境中，教师启发引导、讲练结合，螺旋上升的方式，实现教学目标。

3、情感、态度与价值观

通过生活中的一些具体问题的解决，培养学生对设计算法的浓厚兴趣，激发学生的求知欲，锻炼学生解决问题的能力，进而增强学生的成就感。

三、教学过程

1、创设情境，提出问题

问题1：黄岩火车站快要开始营业了

规定：火车托运p(kg)行李时每千米的费用（单位：元）标准为

用心

爱心

专心 0.3pp30kg y0.3300.5(p30)p30kg请设计算法，并画出行李托运费的程序框图

[设计意图]问题是数学的心脏，数学教学应当从问题开始，以实际应用问题作为情境，激发学生的学习热情，引发学生的学习动机，通过问题展开教学活动，引导学生主动进入新知识。

2、解决问题

(1)探讨条件结构的特点

以学生所画的程序框图为例，概括条件结构的特点，并与顺序结构进行比较，得出如下结论：条件结构的特点是有一个判断过程，如果满足条件就执行某种操作，否则执行其他操作，执行到哪一步，需要根据条件作出选择。(2)引入新知识，学习条件语句

算法中的条件结构可以用条件语句来实现，其一般格式与对应的程序框图（书p10）如下： IF 条件

THEN

IF 条件

THEN

语句体1

ELSE

语句体

语句体2 END IF

END IF

[学生活动]：书翻到第10页，把条件结构对应的两种程序框图写出条件语句（运用新知）(3)解决问题1 [学生活动]：根据问题1所画的程序框图以及原先学过的输入、输出、赋值语句，编写程序，同时教师随机让两名学生板演：

INPUT

p

IF p<=30 THEN

y=0.3p

ELSE

y=0.3300.5(p30)

END IF

PRINT y

END [教师小结]在应用条件语句编程时要注意以下几点：

① 条件的判断与执行语句的顺序（首先对IF后的条件进行判断，如果（IF）条件符合，那么（IHEN）执行语句体1，否则（ELSE）执行语句体2。② IF与END IF要配对使用，不能只用其一。

③ 区分END IF与END的区别，前者是结束条件语句，后者是结束整个程序。

④ 编写程序时注意不要漏掉一些条件的结束语句，特别是条件语句比较多的时候，因此书写的时候可由里向外将每个条件结构错开位置。

3、简单应用（随堂练习）

练习1：将p11图1.110中的程序框图转化为程序

问题2：阅读下面的程序，你能得出什么结论？

① IF x>0 THEN ② TNPUT x

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专心 y=1 IF x<0 THEN ELSE x=-x y=0 END IF END IF PRINT x END [设计意图]：使学生进一步认识条件语句，熟悉条件结构与条件语句的互化，进一步体会赋值语句、条件语句，而且还能锻炼学生阅读程序的能力。

问题3：编写一个程序，求实数x的绝对值

[设计意图]：不仅是为了应用条件语句，而且再次提供了完整经历算法设计全过程的机会。

3、深入探究，条件语句的深层应用

问题4：将p12图1.111求解一元二次方程axbxc0的算法的程序框图转化为程序 算法分析：观察程序框图可以发现，此题并不简单，原因是框图中包含了两个条件结构，而且内层的条件结构是外层的条件结构的一个分支，属于多层结构的嵌套问题。[设计意图]：本例所设计的算法本质是“公式法”。是给出框图之后，进而用条件语句来编写程序。先给学生留有足够的空间，放手让他们去探索，若有困难，老师加以分析、提醒，如算术平方根的符号为SQR等等，再补充几个比较常见的函数及功能，如ABS是x的绝对值，LOG是x取自然对数，它们都是QBASIC中的标准函数，可以直接应用，另外再补充QBASIC中常用的算术运算符，如,/,，MOD，分别表示乘，除，不等，余数，整除。[教师小结]：对于两个条件结构嵌套的一般格式如下： TF 条件1 THEN 语句体1 IF 条件2 THEN 语句体2 ELSE 语句体3 END IF ELSE 语句体4 END IF 问题5：编写一个程序，输入两个实数，并由大到小输出这两个数。

[设计意图]：进一步认识算法的程序，并学习一些编程的小技巧，进而完成三个数的问题。算法分析：这是一道典型的可用条件结构的算法问题，设计的思路和问题3相似，完整地经历了先用自然语言写出算法步骤，接着画出程序框图，最后把程序框图转化为程序的全过程。本例的程序中使用的“小技巧”是借助一个中间变量“t”来交换两个变量的值

INPUT “a，b=”；a，b IF b>a THEN

t=a

a=b

b=t END IF

PRINT a，b END

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2变式：编写程序，使任意输入的3个整数按从大到小的顺序输出。

[教师小结]：这个算法编程时主要是重复用到变量的交换，这是程序的关键之处。基本思想是先将a与b比较，把小者赋给b，大者赋给a；再将a与c比较，把小者赋给c，大者赋给a,此时a已是三者中最大；最后将b与c比较，大者赋给b小者赋给c，a、b、c就按大到小的顺序排列了。

推广：编写程序，使任意输入的n(n是正整数)个整数按从大到小的顺序输出。（生讲思路）[设计意图]：让学生学会思考，理解知识间的联系，学会举一反三。练习2：

（1）读程序,说明程序的运行过程: INPUT “Please input an integer:”;x IF 9

(3)闰年是指能被4整除但不能被100整除,或者能被400整除的年份,编写一个程序,判断输入的年份是否为闰年? [设计意图]：体现学习是再创造。学习不再看成是一种被动地吸收知识，通过反复练习强化储存知识的过程，而是用学生原有的知识处理新的任务，并构建他们自己的意义。

4、归纳小结，启发创新

问题6：通过本节课的学习，你学到了什么知识？

课后作业：设置一个含嵌套结构的问题，画出程序框图，编制相应的程序，准备交流。[设计意图]：让学生进一步体验条件结构及条件语句的特征。同时，引导学生把学习的知识与实际问题相结合，体现学以致用的道理。

四、几点反思

1、本节课主要学习了条件语句的结构、特点、作用以及用法，并能解决一些简单的问题。条件语句一般用在对条件进行判断的算法设计中，如判断一个数的正负，确定两个数的大小，解一元二次方程等问题，还有求分段函数的函数值等，往往要用条件语句，有时甚至要用到条件语句的嵌套。

2、本节课算法教学采用“问题教学”，从具体的学生熟悉的实例出发（问题1），创设情境，结合原有的知识，让学生体会条件结构的特征；紧接着通过练习

1、问题

2、问题3，环环相扣，激发学生的兴趣，发挥学生学习的主动性，使学生进一步认识、理解条件语句，熟悉条件结构与条件语句的互化，进一步体会赋值语句、条件语句，而且还能锻炼学生阅读程序的能力；然后通过问题4引出多重结构嵌套，深化对条件结构的认识；最后通过问题5以及变式与推广，进一步认识算法的程序，并学习一些编程的小技巧，让学生学会思考，理解知识间的联系，学会举一反三。

这样的教学路线，使得学生在环环相扣的问题探究过程中，既有行动上的参与，更让学生养成独立思考，积极探索的好习惯。也正因为这样，高中数学课程设立“数学探究”“数

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专心 学建模”等学习活动，为学生形成积极主动的、多样的学习方式进一步创造有利条件，以激发学生的数学学习兴趣。

3、条件语句是算法中的一个知识点，而算法本来属于信息技术的内容，信息技术和数学课程内容的整合成为课程标准制定的一个基本理念。高中数学课程应提倡利用信息技术来呈现以往教学中难以呈现的课程内容，在保证笔算训练的前提下，尽可能使用科学型计算器，各种数学教育技术平台，加强数学教学与信息技术的结合，鼓励学生运用计算机、计算器等进行探索和发现。而我们这边的学生使用的都是一般的计算器，只有计算功能，没有绘制功能，所有算法相应的程序语句是否可行、可靠？根本无法验证，仍然是“纸上谈兵”。对程序框图的可行性缺乏验证，会缺乏真实感的信任，会在一定程度上降低学生的兴趣、参与的激情，课堂上如有机会，我们老师尽量通过计算机来验证，不过效果不是很好，这是教学中令人非常遗憾的地方，希望在不久的将来能够得到改善。

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专心 5