内容正文:
清远崇文高中分课时教学设计
执教老师
黄社花
班级
高二
科目
英语
授课课题
普通高中英语(2019版)选修第二册
Unit 1 Science and scientists教学设计 Period 6 Reading for writing
单元课时
共 7 课时
本节课时
第 6 课时
项目
内容
二次备课
教学
目标
教材
分析
教材分析:
该部分的活动主题是写“写一写伟大科学家的必备素养”要求学生通过阅读钱学森和霍金的人物传记,第一篇文章“The Father of China's Aerospace”按照时间顺序概述了钱学森的一生,重点介绍了他曲折的求学报国经历,以及他回国后克服困难,在航天科技领域所做的开创性工作,文末还提及他广泛的爱好,以及这些爱好对他开展科学研究的积极影响。第二篇文章“A World of Pure Thought”重点讲述了霍金早期成名的经历,突出了他顽强地与疾病作斗争、敢于质疑、坚持梦想、勇于承认错误等可贵品质。并结合自身体验和知识积累写一篇文章,分析伟大科学家的品格和素养,阐述科学精神的内涵。
在写作策略和技巧上,两个语篇都有效使用了一些衔接词语,如:however、 nevertheless、 because 、in general、 besides、 furthermore 、above all等。
教学目标:
1.获取、梳理、描述钱学森与史蒂芬·霍金的性格品质。
2.指导学生从主题、内容、语言、结构等方面分析两篇阅读,在此基础上完成有关科学精神的写作任务,培养学生恰当使用衔接词语的意识和能力。
课堂
导入
Step I. Before-reading
1. Answer some questions.
Do you know him Qian Xuesen ? Do you know him Stephen Hawking?
_____________________________________________________________.
2.Enjoy two videos to lead in The Father of China’s Aerospace \ A World of Pure Thought.
3.Look at the title and pictures on page 7-9, and learn about the main idea of the text.
(设计目的:通过语篇中的图片和标题了解文章内容,利用短视频激发学生的学习兴趣,为更好的学习文章内容做铺垫。)
此环节预设时长:7 mins
学
生
活
动
一
学
生
活
动
一
学
生
思
考
Read the text and answer questions.
Thinking
A.Read the text ,and then answer the questions on P.9 Ex.1
Find out why he was considered as “the father of China’s aerospace” by deciding if the statements are true(T) or false(F).
1.Qian changed his major because of a shift in personal interest. ( )
2.Qian’s strong interest in art has a positive impact on a scientist’s development. ( )
3.When Hawking was young, almost everyone believed that the universe began with a big bang. ( )
4.Because Hawking was determined, he was able to succeed even though he was ill. ( )
B P.9 Ex.2 Answer the questions below using the information from the text
1.Why was Qian called “ the father of China’s aerospace”?
2.How was Hawking’s own theory proven correct?
C.Summarize the structure of the two passages.
(设计目的:通过思考,学生可以识别文章类型, 明确文章出处并且把握文章整体框架。)
此环节预设时长:10 mins
出示评价量表学生
讨论
Read the text quickly and find out the main idea or key words of each part.
Match the main ideas (A-D) below with the paragraphs.
(设计目的:通过同桌讨论,学生总结概括文章结构及其大意。)
给分点
中心句
提取关键词
分数步长
照抄:0.5 分
改编:1分
些许错误(拼写、语法):1.5分
关键词提取正确并且无错误:2分
此环节预设时长:10 mins
学生
展示
Find out why he was considered as “the father of China’s aerospace” by deciding if the statements are true(T) or false(F).
1.Qian changed his major because of a shift in personal interest. ( )
2.Qian’s strong interest in art has a positive impact on a scientist’s development. ( )
3.When Hawking was young, almost everyone believed that the universe began with a big bang. ( )
4.Because Hawking was determined, he was able to succeed even though he was ill. ( )
(设计目的:通过填空并上台展示,检测主活动-学习文章细节内容。)
此环节预设时长:8mins
教师
依据
评价
量表
点评
讲解
Summarize the structure of the passage
Students will conclude some key words and summarize the structure of the passage. Finish the structure and show it on the stage.
1.Why was Qian called “ the father of China’s aerospace”?
Answers:Much of the technology behind the Shenzhou rockets was based on his research.
2.How was Hawking’s own theory proven correct?
Answers:Hawking’s own work on the big bang theory was soon proven by astronomers with telescopes
给分点
中心句
提取关键词
分数步长
照抄:0.5 分
改编:1分
些许错误(拼写、语法):1.5分
关键词提取正确并且无错误:2分
(设计目的:通过绘制文章结构图并上台展示,检测主活动,学习文章结构。)
此环节预设时长:8 mins
课堂
检测
Personality/ qualities
What kind of person is Qian Xuesen?
What kind of person is Stephen Hawking?
给分点
中心句
提取关键词
分数步长
照抄:0.5 分
改编:1分
些许错误(拼写、语法):1.5分
关键词提取正确并且无错误:2分
此环节预设时长:6 mins
课堂
小结
Summary:
Ask students a question to summarize the structure of the whole passage?
What did you learn from this lesson?
(设计目的:通过回答老师的提问,学生回顾并反思本节课所学到的知识。)
此环节预设时长:3 mins
课后
作业
选择性必修二 优化方案 Unit1 Reading for Writing
板书
设计
教学
反思
学科网(北京)股份有限公司
$$
清远崇文高中分课时教学设计
执教老师
黄社花
班级
高二
科目
英语
授课课题
普通高中英语(2019版)选修第二册
Unit Working the Land 教学设计 Period 7 Reading for writing
单元课时
共 7 课时
本节课时
第 7 课时
项目
内容
二次备课
教学
目标
教材
分析
教材分析:
该部分的活动主题是写“写一写伟大科学家的必备素养”要求学生通过阅读钱学森和霍金的人物传记,第一篇文章“The Father of China's Aerospace”按照时间顺序概述了钱学森的一生,重点介绍了他曲折的求学报国经历,以及他回国后克服困难,在航天科技领域所做的开创性工作,文末还提及他广泛的爱好,以及这些爱好对他开展科学研究的积极影响。第二篇文章“A World of Pure Thought”重点讲述了霍金早期成名的经历,突出了他顽强地与疾病作斗争、敢于质疑、坚持梦想、勇于承认错误等可贵品质。并结合自身体验和知识积累写一篇文章,分析伟大科学家的品格和素养,阐述科学精神的内涵。
在写作策略和技巧上,两个语篇都有效使用了一些衔接词语,如:however、 nevertheless、 because 、in general、 besides、 furthermore 、above all等。
教学目标:
1.获取、梳理、描述钱学森与史蒂芬·霍金的性格品质。
2.指导学生从主题、内容、语言、结构等方面分析两篇阅读,在此基础上完成有关科学精神的写作任务,培养学生恰当使用衔接词语的意识和能力。
课堂
导入
Review the structure of the text.
(设计目的:通过复习文章结构及大意,学生能够为之后的细节写作做好准备。)
此环节预设时长:3mins
学
生
活
动
学
生
活
动
学
生
思
考
Task1 Part1 Thinking
Writing: P. 9 Ex.3
Write an about the scientific spirit.
谋篇布局
Outline of the Essay
①Paragraph 1:人物概况(Brief information -- 名字,身份,头衔)。
②Paragraph 2 :人物事迹及科学家精神。(personal experience+qualities) 人物的事迹+突出人物的个性和品质,注意事迹和精神一定要匹配,选取两三个即可。
③Ending :总结升华,概括该人物所表现出来的科学精神及对自己的影响。 (Summary&influence) 学习,生活,态度的影响
Task2 :写作细节输入:
(设计目的:通过回答问题,理清文章的导入部分的细节要点。)
此环节预设时长:5 mins
三、写作模板参考:
1.My admired scientist
Paragraph1 : I am going to ____________________________ (介绍我最喜欢的科学家)to you._________________________(我最尊敬的人)is _________________ (袁隆平 )
Paragraph2:Yuan Longping, —————————(被誉为) the “father of hybrid rice”,
———————————————————(是中国最著名、最具影响力的农业科学家之一) in agriculture.—————————— 1953年毕业之后, Yuan became a researcher, ———————————————————————— (把他所有的时间和精力都投入到农业上)。————————————————(通过他不懈的努力),Yuan developed the first hybrid rice that could be used for farming in 1974.—————————————————————————————————————————(袁的创新不仅帮助了中国,也帮助了许多其他国家。)Therefore, he has won numerous awards for helping the world solve food shortages.
Paragraph3:——————————————————————————————————————————————————————————————— (对我影响最大的是他实现梦想的决心,以及他对农业和我们国家的奉献。).________________________(他的精神激励了我) to pursue my own goal in the future.
2. 段落过渡常用语:Details
1)时间和空间关系
1.born in Hangzhou in 1911
2.after the Songhu Battle broke out in 1932
3.over the course of the 1930s and 1940s
4.a graduate student in physics at CU in 1964
5.during the question and answer period after one of Hoyle’s lectures
2)转折关系
1.however
2.nevertheless
3)因果关系
Because
4)列举个顺序关系:
1.in general
2.besides
3.furthermore
4.above all
3.用上段落过渡词,连句成篇
(设计目的:通过细节例句的呈现,写作模板的展示,学生能够理解完成有关科学精神的写作任务,培养学生恰当使用衔接词语的意识和能力。)
Task4 Write an essay about the scientific spirit.
(设计目的:通过学生小组讨论,学生将所学进行简单的运用,为书面表达打下基础。)
此环节预设时长:14 mins
出示评价量表学生
讨论
给分点
项目分数
实际所得分数
1. 文章结构应该清晰明确
5分
①Paragraph 1:人物概况(Brief information -- 名字,身份,头衔)。
②Paragraph 2 :人物事迹及科学家精神。(personal experience+qualities) 人物的事迹+突出人物的个性和品质,注意事迹和精神一定要匹配,选取两三个即可。
③Ending :总结升华,概括该人物所表现出来的科学精神及对自己的影响。 (Summary&influence) 学习,生活,态度的影响
15分
3. 文章应该使用衔接词语、正确的语法、标点和拼写
5分
(设计目的:通过讨论,学生里清文章框架,添词加句,为独立写作降低难度。)
此环节预设时长:10 mins
学生
展示
Write an essay about the scientific spirit.
Show students’ essays about the scientific spirit on the stage and evaluate their essays.
Qian Xuesen
Born into a wealthy family on December 11th, 19111, Zhejiang Province, Qian Xuesen was so clever that he was regarded as a “super talented” boy in his childhood. Having graduated from Shanghai Jiaotong University in 1934, he went to America for his further study and gained his doctor’s degree in the Science of Astronomy. Since he returned to China, he has devoted all his life to China’s AnA industry, taking part in the design and research of rockets and missiles as well as opening a new era of China’s Astronomy industry.
It’s for his outstanding achievements that Qian Xuesen is honored as the “Father of China’s Astronomy” and the “King of Rockets”. Qian Xuesen, a pioneer of China’s Astronomy industry, passed away in November, 2009 in Beijing.
(设计目的:学生呈现自己的作文,老师通过现场点评及时反馈学生存在的一些共性或个性的问题。)
此环节预设时长:5 mins
教师
依据
评价
量表
点评
讲解
给分点
项目分数
实际所得分数
1. 文章结构应该清晰明确
5分
①Paragraph 1:人物概况(Brief information -- 名字,身份,头衔)。
②Paragraph 2 :人物事迹及科学家精神。(personal experience+qualities) 人物的事迹+突出人物的个性和品质,注意事迹和精神一定要匹配,选取两三个即可。
③Ending :总结升华,概括该人物所表现出来的科学精神及对自己的影响。 (Summary&influence) 学习,生活,态度的影响
15分
3. 文章应该使用衔接词语、正确的语法、标点和拼写
5分
此环节预设时长:5 mins
课堂
检测
Write an essay about the scientific spirit.
此环节预设时长:3mins
课堂
小结
Summary:
How to writean essay about the scientific spirit,What did you learn from this lesson?
(设计目的:通过回答老师的提问,学生回顾并反思本节课所学到的知识。)
此环节预设时长:2 mins
课后
作业
根据评价量表修改文章。
板书
设计
Outline of the Essay
①Paragraph 1:人物概况(Brief information -- 名字,身份,头衔)。
②Paragraph 2 :人物事迹及科学家精神。(personal experience+qualities) 人物的事迹+突出人物的个性和品质,注意事迹和精神一定要匹配,选取两三个即可。
③Ending :总结升华,概括该人物所表现出来的科学精神及对自己的影响。 (Summary&influence) 学习,生活,态度的影响
教学
反思
学科网(北京)股份有限公司
$$ UNIT 1 SCIENCE AND SCIENTIST
Reading for Writing:
Write about what makes a great scientist
Using language
Write about what makes a great scientist
THE FATHER OF CHINA’S AEROSPACE
A WORLD OF PURE THOUGHT
Lead in
Do you know him?
Qian Xuesen Introduction
Lead in
Do you know him?
Stephen Hawking Introduction
Para.1 A. His personality(个性).
Paras.2-5 B. His death.
Para.6 C. His personal experience and achievements.
Para.7 D. Introduction.
Reading for the main idea
Read the text and match each paragraph with its main idea.
While-reading
答案 Para.1—D;Paras.2-5—C;Para.6—A;Para.7—B
5
Study the structure of the texts
while-reading
P1
P2
P3
A. Characteristics that made him great.
B. Introduction.
C. His claim to fame.
A World of Pure Thought
给分点 中心句 提取关键词
分数步长 照抄:0.5 分
改编:1分 些许错误(拼写、语法):1.5分
关键词提取正确并且无错误:2分
The Father of China’s Aerospace
Activity 2:
Read Qian Xuesen’s story again and find out how his life events illustrate(说明) that he was considered “the Father of China’s aerospace”.
While-reading
8
Find out why he was considered as “the father of China’s aerospace” by deciding if the statements are true(T) or false(F).
Qian changed his major because of a shift in personal interest.
Qian’s strong interest in art has a positive impact on a scientist’s development.
The Father of China’s Aerospace
While-reading
9
Qian changed his major because of a shift in personal interest. ( )
F
3 While-reading
10
3 While-reading
Qian’s strong interest in art has a positive impact on a scientist’s development. ( )
T
3 While-reading
Why was Qian called “ the father of China’s aerospace”?
Much of the technology behind the Shenzhou rockets was based on his research.
Read the text and decide if these statements are true or false.
3.When Hawking was young, almost everyone believed that the universe began with a big bang.
4.Because Hawking was determined, he was able to succeed even though he was ill.
A World of Pure Thought
3 While-reading
13
3.When Hawking was young, almost everyone believed that the universe began with a big bang.( )
F
3 While-reading
14
4.Because Hawking was determined, he was able to succeed even though he was ill. ( )
T
How was Hawking’s own theory proven correct?
Hawking’s own work on the big bang theory was soon proven by astronomers with telescopes
What kind of person is Qian Xuesen?
Personality
/ qualities Supportive examples
6.returned to China
7. taking on the challenge in developing China’s space science
1. switched his major to aviation (航空)
2. became a pioneer in American jet and rocket technology
3. conduct important research into rocket propulsion
4. founded the Jet Propulsion Laboratory
5. in charge of not only developing China’s rocket science but also
its space and missile programme
8. developed the Dongfeng missiles, Long March rockets
9. successfully launched its first man-made satellite
10. Shenzhou rockets be traced back to Qian's research
11. music and drawing 12. his deep appreciation for art
patriotic(爱国的)
knowledgeable
determined
outstanding and creative
has a wide range
of interests
Personality/ qualities:determined、patriotic(爱国的)、 knowledgeable(知识)、outstanding and creative、
has a wide range of interests、 brilliant、gifted、brave、sometimes careless in what he said or did、courageous、
Personality/ qualities
What kind of person is Stephen Hawking?
Personality/ qualities:determined、patriotic(爱国的)、 knowledgeable(知识)、outstanding and creative、
has a wide range of interests、 brilliant、gifted、brave、sometimes careless in what he said or did、courageous、
Personality /
qualities Supportive examples
1. Hawking’ s own work on the big bang theory
was soon proven by astronomers with telescopes
2.stood up and pointed out that Hoyle had made a mistake
3.was willing to say what others were afraid to say
4.to dream of what others were afraid to dream about
5. was willing to admit his faults
6.his success not only in scientific research but also his fight against disease
7.as a scientist 8.his fight against his disease
This odd (奇怪)combination of characteristics had made him one of the greatest thinkers of the 20th and 21st centuries.
gifted
brilliant
brave
courageous
sometimes careless
in what he said or did
determined
Personality/ qualities
Qian Xuesen
时间和空间关系
转折关系
因果关系
1.born in Hangzhou in 1911
2.after the Songhu Battle broke out in 1932
3.over the course of the 1930s and 1940s
4.however
5.nevertheless
because
Stephen Hawking
时间和空间关系
列举和顺序关系
1.a graduate student in physics at CU in 1964
2.during the question and answer period after one of Hoyle’s lectures
4.in general
5.besides
6.furthermore
7.above all
These serve to link elements in the passages and bring greater cohesion(相干的) and logical (逻辑)flow to it.
P.9 Ex.3: Underline the linking words(连词) and phrases in the passages, and describe their functions.
19
How to write an essay about an outstanding figure?
My admired scientist
Paragraph 1: Brief introduction (get down to the topic)
Paragraph 2: Quality 1
Paragraph 2:Quality 2
Paragraph 2:Quality 3
...
scientist(s)’ event(s)
scientist(s)’ event(s)
scientist(s)’ event(s)
Ending: significance of the qualities & the inspiration you get
scientist(s)’ event(s)
Outline of the Essay
21
写作指导
时态:描写人物外貌、性格、兴趣等常用一般现在时
而人物的出生地、教育背景、重要经历、事迹时常用一般过去时。
人称:第三人称
Outline of the Essay
①Paragraph 1:人物概况(Brief information -- 名字,身份,头衔)。
②Paragraph 2 :人物事迹及科学家精神。(personal experience+qualities) 人物的事迹+突出人物的个性和品质,注意事迹和精神一定要匹配,选取两三个即可。
③Ending :总结升华,概括该人物所表现出来的科学精神及对自己的影响。 (Summary&influence-- 学习,生活,态度的影响)
1. 我向你介绍我最喜欢的一位科学家。
I am going to introduce one of my favorite scientists to you.
2. 他是在……领域最著名和有影响力的科学家之一
He is one of the most famous and influential scientists in…
3.他是第一个……的科学家。(使用不定式作定语)
He is the first scientist to…
eg. 袁隆平是第一个研制出杂交水稻的科学家。
Yuan Longping is the first scientist to develop the hybrid rice.
Paragraph1 首段常用句型(Brief information)
过去分词做后置定语
1. sb, known as +头衔, is one of the greatest +身份+ in the world.
林巧稚,被誉为万婴之母,是中国最伟大的医生之一。
Lin Qiaozhi, known as “the mother of ten thousand babies”, is one of
the greatest doctors in China.
非限制性定语
1.Sb, who is my favorite scientist, is considered to be +头衔。
钱学森是我最喜欢的科学家,他被誉为导弹之父。
Qian Xuesen, who is my favorite scientist, is considered to be “the
father of missile.”
Paragraph1 首段常用句型(Brief information)
Born in a…family in…, he… 在…年出生于…家庭,他…
在……期间, 他遇到很多困难, 但是他意志坚定, 从不放弃。
In the course of…, he met a lot of difficulties. However, he was
determined and never gave up.
强调句:It is+强调部分+that +剩下句子
正是他的无私付出和伟大贡献激励年轻人投入到医学事业中。
It is his selfless devotion and great contribution that inspire the
young to devote themselves to the medical care.
Paragraph2 正文句型(personal experience & qualities)
1. He inspires me to be a person like him. 他激励我成为像他一样的人。
2. 对我影响最深的是他对科学和祖国的热爱。(主语从句)
What influenced me most is his affection for science and our country.
3. 知道他的故事后,我决定不管遇到什么困难都继续前行。(现在分词作状语)
Having known his story, I make up my mind to keep going whatever difficulties I meet.
Ending 尾段常用句型(Influence)
Paragraph1 : I am going to ____________________________ (介绍我最喜欢的科学家)to you._________________________(我最尊敬的人)is _________________ (袁隆平 )
Paragraph2:Yuan Longping, —————————(被誉为) the “father of hybrid rice”,
———————————————————(是中国最著名、最具影响力的农业科学家之一) in agriculture.—————————— 1953年毕业之后, Yuan became a researcher, ———————————————————————— (把他所有的时间和精力都投入到农业上)。————————————————(通过他不懈的努力),Yuan developed the first hybrid rice that could be used for farming in 1974.—————————————————————————————————————————(袁的创新不仅帮助了中国,也帮助了许多其他国家。)Therefore, he has won numerous awards for helping the world solve food shortages.
Paragraph3:——————————————————————————————————————————————————————————————— (对我影响最大的是他实现梦想的决心,以及他对农业和我们国家的奉献。).________________________(他的精神激励了我) to pursue my own goal in the future.
My admired scientist
Paragraph1: I am going to ____________________________ (介绍我最喜欢的科学家)to you._________________________(我最尊敬的人)is _________________ (袁隆平 )
Yuan Longping
introduce my favorite scientist
The person I admire most
My admired scientist
Paragraph2:Yuan Longping, —————————(被誉为) the “father of hybrid rice”,
———————————————————(是中国最著名、最具影响力的农业科学家之一) in agriculture.—————————— 1953年毕业之后, Yuan became a researcher, ———————————————————————— (把他所有的时间和精力都投入到农业上)。————————————————(通过他不懈的努力),Yuan developed the first hybrid rice that could be used for farming in 1974.———————————————————————————————————————————————
(袁的创新不仅帮助了中国,也帮助了许多其他国家。)Therefore, he has won numerous awards for helping the world solve food shortages.
is one of the most famous scientists
known as
After graduating in 1953
devoting all his time and energy to agriculture
Through his tireless efforts
Yuan’s innovation has help feed not only China, but also many other countries.
Paragraph2:———————————————————————————————————————————————————————————————
(对我影响最大的是他实现梦想的决心,以及他对农业和我们国家的奉献。).________________________(他的精神激励了我) to pursue my own goal in the future.
What influenced me most is his determination to fulfill his dreams as well as his devotion to agriculture and our country.
His spirit inspired me
Qian Xuesen
时间和空间关系
转折关系
因果关系
1.born in Hangzhou in 1911
2.after the Songhu Battle broke out in 1932
3.over the course of the 1930s and 1940s
4.however
5.nevertheless
because
Stephen Hawking
时间和空间关系
列举和顺序关系
1.a graduate student in physics at CU in 1964
2.during the question and answer period after one of Hoyle’s lectures
4.in general
5.besides
6.furthermore
7.above all
These serve to link elements in the passages and bring greater cohesion(相干的) and logical (逻辑)flow to it.
P.9 Ex.3: Underline the linking words(连词) and phrases in the passages, and describe their functions.
31
I am going to introduce my favorite scientist to you.The person I admire most is Yuan Longping.
Yuan Longping,known as the “father of hybrid rice”, is one of the most famous scientists in agriculture.After graduating in 1953, Yuan became a researcher, devoting all his time and energy to agriculture. Through his tireless efforts,Yuan developed the first hybrid rice that could be used for farming in 1974. Yuan’s innovation has help feed not only China, but also many other countries.Therefore, he has won numerous awards for helping the world solve food shortages.
What influenced me most is his determination to fulfill his dreams as well as his devotion to agriculture and our country. His spirit inspired me to pursue my own goal in the future.
你校校报征集一份稿件,关于我国著名的科学家--钱学森的简介。 请你根据下列表格内容写一篇英语短文。
题目:A Brief Introduction of Qian Xuesen
人物身份 杰出的科学家、中国航天事业的先驱
生平活动、成就 1.出生:1911年12月11日生于浙江杭州,少时被称为“神童”;
2.1934年毕业于上海交通大学(Shanghai Jiao Tong University),其后前往美国深造并获得航空学博士学位;
3.1955年回国,毕生从事航天科技事业,参与火箭和导弹的开发研制,开启中国航天时代;
4.2009年11月,于北京逝世。
评价 被誉为...;被尊敬...
参考词汇:航空学 the science of Astronomy,
航天科技事业 AnA industry, (Astronomy and Aircraft),
“神童”a super-talented boy
火箭和导弹 rocket and missile
Paragraph1 : I am going to ____________________________ (介绍我最喜欢的科学家)to you._________________________(我最尊敬的人)is _________________ (钱学森 )
Paragraph2:Qian Xuesen, 出生时间、地点—————————(被誉为) the “father of ———————”, ———————————————————(是中国最著名、最具影响力的......科学家之一).—————————— , ———————————————————————— 。————————————————(通过他不懈的努力).—————————————————————————————————————————
Paragraph3:(评价)
A Brief Introduction of Qian Xuesen
1. Use your outline to write a short essay giving your opinion on the topic.
2. Polish your drafts and share with your partners.
Homework
Thanks for your attention!
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