Unit 2 Book 4 Chemical or Organic Farming 公开课课件
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必修4Unit 2 Chemical or Organic Farming公开课优质获奖课件
Task 1 Underline the topic sentence of each paragraph.
A. What are some of the problems caused by chemical fertilizers?
B. ...____________________________________________________ C. ...____________________________________________________
A What are some of the problems caused by chemical fertilizers? First, they damage the land by killing the helpful bacteria and pests as well as the harmful ones. Chemicals also stay in the ground and underground water for a long time. This affects crops and, therefore, animals and humans, since chemicals get inside the crops and cannot just be washed off. These chemicals in the food supply build up in people’s bodies over time. Many of these chemicals can lead to cancer or other illnesses. In addition, fruit, vegetables and other food grown with chemical fertilizers usually grow too fast to be full of much nutrition. They may look beautiful, but inside there is usually more water than vitamins and minerals.
book4 unit2说课稿
Unit 2 Period 3 Chemical or Organic farming说课稿固阳县第一中学乔佳2016.9.22各位评委老师，上午好，今天我说课的内容是高中英语必修4Unit 2 第三课时Using Language Chemical or Organic farming我说课内容包括以下几个部分：教材分析、学情分析、说教法学法、教学程序及教学反思。
首先我们来进行教材分析。
一．教材分析本课为人教课标版必修4 Unit2 Working the land. Using language：Chemical or Organic farming 。
本单元的中心话题是“农业”，本课是该单元的第二篇阅读课。
学生通过讨论和阅读了解有关化肥危害和有机耕作的知识，并运用这些知识倡导学生关注有机农业，注重健康。
二．学情分析高中二年级学生，智力发展趋于成熟。
他们的认知能力比初中阶段有了进一步的发展，渐渐形成用英语获取信息、处理信息、分析问题和解决问题的能力。
他们学习英语方法由死记硬背转型向理解型并应用到交际上，他们有自己的学习技能和策略，学会把语言学习与现实生活和兴趣联系起来。
通过任务型课堂活动和学习，学生的学习自主性得到加强，不再认为英语的课堂学习很枯燥，主动参与到活动中去，成为课堂的主体，同时也加强了与他人交流合作的能力。
他们会对课文内容提出自己的疑惑和勇于阐述见解，并且从课内知识拓展到课外，通过多种渠道获取学习资源。
不过，学生的水平参差不齐，有些差距还相当大。
因此在教学过程中，布置的任务要兼顾各个层次的学生，使他们都有所收获。
三．教学目标分析根据新颁布的《普通高中英语课程标准（实验稿）》关于阅读课主要教学目标的具体描述，结合本课教学内容，具体从语言知识、语言技能、情感态度和文化意识三个方面制定如下教学目标。
1. 语言知识目标：a) 使学了解农业耕种的相关词汇，并掌握相关的表达法。
b)学习动词的---ing 形式作主语的句型。
人教版高中英语必修四Unit2 Using Language Chemical or organic farmingPPT
Organic farming is simply farming without using any chemicals. 有机耕作就 是不用任何化学肥料的耕作。They focus
on keeping their soil rich and free of disease. 农民关心的是保持土壤肥沃并且免 受病害。A healthy soil reduces disease
人 教 版 高 中 英语必 修四Un it2 U s ing L a nguage C h em ical o r o rga nic f a rming ( 1 )( 共44张 PPT)
人 教 版 高 中 英语必 修四Un it2 U s ing L a nguage C h em ical o r o rga nic f a rming ( 1 )( 共44张 PPT) 人 教 版 高 中 英语必 修四Un it2 U s ing L a nguage C h em ical o r o rga nic f a rming ( 1 )( 共44张 PPT)
levels of soil, for example, planting peanuts that
use the ground's surface followed by vegetables that put down deep roots. 有机耕作的农民还种植多 种农作物来利用不同层次的土壤。比如，他们先种植 生长于浅层土壤的花生，然后再种植生根于深层土壤 的蔬菜。Some organic farmers prefer planting
grass between crops to prevent wind or water
from carrying away the soil, and then leaving it in
on keeping their soil rich and free of disease. 农民关心的是保持土壤肥沃并且免 受病害。A healthy soil reduces disease
人 教 版 高 中 英语必 修四Un it2 U s ing L a nguage C h em ical o r o rga nic f a rming ( 1 )( 共44张 PPT)
人 教 版 高 中 英语必 修四Un it2 U s ing L a nguage C h em ical o r o rga nic f a rming ( 1 )( 共44张 PPT) 人 教 版 高 中 英语必 修四Un it2 U s ing L a nguage C h em ical o r o rga nic f a rming ( 1 )( 共44张 PPT)
levels of soil, for example, planting peanuts that
use the ground's surface followed by vegetables that put down deep roots. 有机耕作的农民还种植多 种农作物来利用不同层次的土壤。比如，他们先种植 生长于浅层土壤的花生，然后再种植生根于深层土壤 的蔬菜。Some organic farmers prefer planting
grass between crops to prevent wind or water
from carrying away the soil, and then leaving it in
M4 U 2 Chemical or Organic Farming高中环境教育学科同步
M 4 Unit 2 Working the landReading, listening and speakingChemical or Organic Farming?姜颖【教学设计背景及学情分析】随着人们生活水平的提高，越来越多的人开始关注生态环境和健康生活的问题，我国政府也采取大量措施进行生态维护和环境保护，有机农业也就引起了人们的关注。
Chemical or Organic Farming? 是人教版高中英语教材必修四Unit 2的一篇泛读课文，旨在通过阅读及后续的听说练习让学生们对比在农业生产中使用化肥的不良后果，更多感受到有机农业的优势，同时意识到人类的生产生活不能以违背自然规律、破坏生态系统为代价，将“绿水青山就是金山银山”的理念在未来的生产生活中传承下去。
农业生产是城市里的孩子不熟悉的内容，然而亲近自然和对田园生活的向往是人类的本性。
本文的话题学生们会产生浓厚的好奇心和探索欲，激发他们学习和表达的兴趣，更愿意参与到课堂活动中来表达他们的看法。
【环境教育渗透点】G2 化肥和农药污染G3 生态农业【教学目标】1. 知识学习目标：学习掌握话题相关的单词、短语：chemical farming, organic farming, fertilize, nutrition , soil, reduce disease, natural waste, build up, lead to 等2.能力目标：整体把握文章结构，概括文章大意；在听力素材中提取大意，找出有效信息；运用所学英语表达自己的观点和想法。
3. 情感态度目标: 通过本课的学习和讨论意识到，人类是自然的一部分，人类的生产和生活都要顺应自然规律，提倡绿色环保的生产生活方式，这样大自然也必然会回馈给人类更健康、更幸福的地球家园。
【教学重点】通过泛读与听说练习，提高学生的阅读概括能力和在阅读及听力素材中提取有效信息的能力，培养学生用英语表达的能力和信心。
Book-4-Unit2-chemica-or-organic-farming
What are some of the problems caused by plastic bags? First, people often leave plastic bags here and there, making white pollution. Second, it takes a long time, more than 100 years ,to be exact, to break up .Last but not least, when heated, plastic bags can produce something harmful, which can build up in our body and eventually lead to cancer or other diseases.
Main idea of the passage
_C_h_e_m_i_c_a_l fertilizers can cause many
problems, so organic farming is
becoming more_p_o_p_u_la_r__.
The structure of this passage
Let’s use cloth bags in our daily life instead of plastic bags, not only for the environment protection, but also for the sake of our health.
Suppose you were given a farm. What would you like to grow or raise? How would you deal with your farming?
m4u2 Chemical or organic farming优秀课件
soil
wet
…
loose hard dry
First, buy or select the seeds from the store.
Second, we need to plough or turn over the
soil.
Third , we sow the seeds in the
soil.
3. What is the goal of using organic farming methods? To grow good food and avoid damaging the environment or people's health.
12
Skimming
Main idea
P1. Long-term use of chemical fertilizers can cause damage to the land and people's health.
build up 增强; 建立；开发 Hard working conditions build up character. 艰苦的工作条件能磨练人的性格。 He built up his strength again after an illness. 他病后逐步恢复体力。
natural fertilizers
How many kinds of fertilizers do farmers use?
There are two kinds. They are chemical
fertilizers and natural ones.
10
Which kind do farmers use when they are doing organic farming?
高中英语 人教版必修四Unit2 Reading -chemical or organic farming(共31张PPT)
• What makes crops grow faster & better ?
2020/6/3
5
It is fertilizer.
2020/6/3
6
fertilizer
How many kinds of fertilizers do you know? There are two kinds.
D
A. Leaving chemicals in the ground
for a long time is good for water supply.
B. They can get the soil exhausted.
C. They can kill helpful bacteria.
D. They can kill harmful pest.
chemical fertilizers
natural fertilizers
2020/6/3
7
chemical fertilizers natural fertilizers chemical farming organic farming
Better ？
2020/6/3
8
Step Ⅲ. Reading
2020/6/3
13
2.1. Choose the best answer.
1. Which statement is WRONG according to the text ? D A. All crops are organic. B. Recently, the term “organic farming” has gained another meaning. C. All farmers use fertilizers. D. Scientists believe some chemical fertilizers are better for people.
2020/6/3
5
It is fertilizer.
2020/6/3
6
fertilizer
How many kinds of fertilizers do you know? There are two kinds.
D
A. Leaving chemicals in the ground
for a long time is good for water supply.
B. They can get the soil exhausted.
C. They can kill helpful bacteria.
D. They can kill harmful pest.
chemical fertilizers
natural fertilizers
2020/6/3
7
chemical fertilizers natural fertilizers chemical farming organic farming
Better ？
2020/6/3
8
Step Ⅲ. Reading
2020/6/3
13
2.1. Choose the best answer.
1. Which statement is WRONG according to the text ? D A. All crops are organic. B. Recently, the term “organic farming” has gained another meaning. C. All farmers use fertilizers. D. Scientists believe some chemical fertilizers are better for people.
云南省玉溪市高中英语必修四：Unit 2 Chemical or Organic Farming 课件
Para1
Why are chemical fertilizers so popular in farming
today? B
A. Because they are expensive.
B. They are a great way to stop crop disease and
increase production.
Jia Lida Supermarket
Speaking: role-play
Situation: You are a farmer and your partners are customers. You are now persuading the customers to buy your “green food” that is healthy and safe but more expensive.
To keep the water as well as keep the soil.
Post-reading
Over the past half century, using chemical fertilizers 1. h_a_s_b_e_c_o_m__e(become) very common in farming. 2. H__o_w_e_v_e_r, using chemical fertilizers for a long term can cause damage 3.__t_o__ the land. These chemicals in the food supply build up in people’s bodies over time. In addition, food grown with chemical 4. _f_er_t_il_iz_e_r_s_ (fertilizer) are lack of nutrition. So farmers are beginning 5. __to__tu_r_n___ (turn) to organic farming. They focus on 6._k_e_e_p_in_g_(keep) their soil rich and free from disease. These methods have7. __th_e__ same goal: to grow good food and to keep the environment and people 8.__h_ea_l_th_y__ ( health ).
人教版高中英语必修四Unit2 Using Language Chemical or organic farming (1)(44页PPT)
Chemical Advantages Stopping crop
Farming
disease and
increase
_p_r_o_d_u_c_t_io_n_
Chemical Disadvanta Damaging the land:
Farming ges
killing the helpful
_b_a_c_t_e_ri_a_a_n__d_p_e_s_t_s
inside the crops and cannot just be washed off. 而这会影响到庄稼，进而影响到动物和人类，因为 化学成分会进入到农作物中，并且不能被冲洗掉。
These chemicals in the food supply build up in people's bodies over time. 随着时间的推移， 食物中的这些化学成分会在人体中堆积。Many of
I. Read the passage and answer the following questions.
1. Why are chemical fertilizers so popular in farming today? They are a great way to stop crop disease and increase production.
2. What problems can be caused by using chemical fertilizers? They can damage the land by killing helpful bacteria and pests and by staying in the ground and underground water for a long time. They damage people’s health by building up in their bodies and leading to cancer or other illnesses.
Book4 unit2 阅读chemical or organic farming
P4.
can cause damage to the land and people’s health.
The structure of this passage
Para1 para1:Topic A new discovery of scientists. para2: Several problems Para2 Problems caused by using chemical fertilizers. Para3 Advantages para3: The advantages of using organic farming. Para4 methods para4:Several Some methods to keep the soil fertile.
first;second; finally;last but not least ,etc.
Tips: connectives （过渡词） or transitional phrases（过渡词） for development
Read paragraph 3 What are the advantages of organic farming?
different roots plant grass between…
Tips: infinitive” to” is used to express the The methods to keep the soil fertile purpose
1 using natural waste from animals as fertilizer. 2 changing the kind of crop in each field .
Chemical Or Organic Farming?
Unit2chemical_or_organic_farming优质课评比课件
Read paragraph 3
3、What is organic farming? And what are the
advantages of organic farming.
With these discoveries, some farmers and many customers are beginning to turn to organic farming. Organic farming is simply farming without using any chemicals. They focus on keeping their soil rich and free of disease. A healthy soil reduces disease and helps crops grow strong and healthy. Organic farmers, therefore, often prefer using natural waste from animals as fertilizer. They feel that this makes the soil in their fields richer in minerals and so more fertile. This also keeps the air, soil, water and crops free from chemicals.
Q1: Why are chemical fertilizers so popular today?
Q 2:What will be developed in the following paragraphs?
What problems can be caused by using chemical fertilizers?
人教新课标 必修四 Unit2 阅读2：Chemical or Organic Farming课件
A. Exposition 说明 C. Narration 记叙
B. Argumentation 议论 D. Description 描写
Match the main idea of each paragraph.
✓ Topic sentence: the first or last sentence of each paragraph.
problems
benefits drawbacks
first also in addition
solution
organic farming
different methods
same goal
1: In the past five decades, though using chemical fertilizers has been popular among farmers because of its advantages, there exist some d2:i sUsaindg vchaenmitcaal gfeertsilizearss hasw ceaul sled. three concerns, namely ruining the soil, polluting the water and reducing the food nutrition.
Discussion: Environmental Pollution Sustainable Development
Air Pollution fog and haze
Water Pollution sewage
Noise Pollution
Light Pollution
WhEant vciarnonwmeednotatol Phoellputwioitnh suSstuasitnaainbalebdleeDveelvoeplmopemnte?nt
高中英语《Book4 Unit2 Chemical or Organic Farming》优质教学课件设计
organic farming. Para4: Organic farmers also use manyother
methods to keep the soil fertile.
Fill in the blanks. Para. 1: The adv_anta_g_e_s__andd_i_s_a_d_v_a_n_t_age_s
Just as Chairman Xi calls on us ： We should avoid wasting money; 节俭 We should be more down-to-earth; 务实
It is only hard work that creates all happiness in the world! 唯有苦干才能成就幸福！
chemical 3.Lead to cancer or other disease
farming 4.have less nutrition
2.
e natural waste
Methods 2.change the kind of crop
of organic farming
3.plant crops with different levels of soil
2. Answer some questions 3. Writer a summary
Fast reading (self-studying)
Task 1 the topic sentence of each paragraph
Para1: Long-term use of these fertilizers can cause
Homework
Share your writing with your partner
methods to keep the soil fertile.
Fill in the blanks. Para. 1: The adv_anta_g_e_s__andd_i_s_a_d_v_a_n_t_age_s
Just as Chairman Xi calls on us ： We should avoid wasting money; 节俭 We should be more down-to-earth; 务实
It is only hard work that creates all happiness in the world! 唯有苦干才能成就幸福！
chemical 3.Lead to cancer or other disease
farming 4.have less nutrition
2.
e natural waste
Methods 2.change the kind of crop
of organic farming
3.plant crops with different levels of soil
2. Answer some questions 3. Writer a summary
Fast reading (self-studying)
Task 1 the topic sentence of each paragraph
Para1: Long-term use of these fertilizers can cause
Homework
Share your writing with your partner
新课标人教版必修四unit 2Chemical or Organic Farming (共24张PPT)
damage the land 1. ________ 2. stay in the crop; get inside the build up in people's bodies; crops; ___ ____ lead to cancer or illnesses 3. grow too fast to be full of nutrition ________
Judging from the structure of the whole passage, what's the writing style of the passage?
A. argumentation B. narration C. exposition
Para.1
Let's draw a mind-map(思维导图) of Para. 1 (first find out the linking words/phrases )
para. 4
• What are methods of organic farming? • 1. use natural waste; crop each field every few 2. change _____ _____in years; levels of soil; 3. use different _____ 4. plant grass _____ between crops
Sser: Good morning, Professor...We are students from...Would you mind ... Experts:... Sser: We, students in Ss are curious about what organic farming is? Can you explain a little bit? Organic food is considered natural and healthier, but some people don't think so, why?) ...... (make sure every student have equal chance to conduct the conversation)
Judging from the structure of the whole passage, what's the writing style of the passage?
A. argumentation B. narration C. exposition
Para.1
Let's draw a mind-map(思维导图) of Para. 1 (first find out the linking words/phrases )
para. 4
• What are methods of organic farming? • 1. use natural waste; crop each field every few 2. change _____ _____in years; levels of soil; 3. use different _____ 4. plant grass _____ between crops
Sser: Good morning, Professor...We are students from...Would you mind ... Experts:... Sser: We, students in Ss are curious about what organic farming is? Can you explain a little bit? Organic food is considered natural and healthier, but some people don't think so, why?) ...... (make sure every student have equal chance to conduct the conversation)
unit2 Chemical or Organic Farming课件
vt. 施肥 n. 肥料；化肥
n. 矿物; 矿石 n. 营养; 滋养; 食物
Expressions preview
build up lead to focus on
使…免受(影响, 伤害等)； 使…不含(有害物)
逐渐增强; 建立; 开发
keep… free from/of
导致; 造成 (后果) 集中 (注意力, 精力等) 于
Para4:
1. What three methods are mentioned in this paragraph?
Task 1 Skimming
（3mins） Find out the main idea of these four paragraphs.
P1.
Other methods to keep the soil fertile.
P2.
Farmers and customers turn to
organic farming.
P3.
Problems caused by chemical fertilizers.
P4.
Long-term use of chemical fertilizers
can cause damage to the land and
people’s health.
Task 2 Scanning
Para1:
green food
2. What is the advantages of using natural
fertilizer?
* Reduce diseases in crops and help them grow strong and healthy. * Make the soil richer in minerals and so more fertile. * Besides, keep the air, soil and water as well as the food supply free from chemical.
n. 矿物; 矿石 n. 营养; 滋养; 食物
Expressions preview
build up lead to focus on
使…免受(影响, 伤害等)； 使…不含(有害物)
逐渐增强; 建立; 开发
keep… free from/of
导致; 造成 (后果) 集中 (注意力, 精力等) 于
Para4:
1. What three methods are mentioned in this paragraph?
Task 1 Skimming
（3mins） Find out the main idea of these four paragraphs.
P1.
Other methods to keep the soil fertile.
P2.
Farmers and customers turn to
organic farming.
P3.
Problems caused by chemical fertilizers.
P4.
Long-term use of chemical fertilizers
can cause damage to the land and
people’s health.
Task 2 Scanning
Para1:
green food
2. What is the advantages of using natural
fertilizer?
* Reduce diseases in crops and help them grow strong and healthy. * Make the soil richer in minerals and so more fertile. * Besides, keep the air, soil and water as well as the food supply free from chemical.
高中英语M4U2chemicalororganicfarming人教版必修
◆ Planting _g_ra__ss_
between crops
MATCH THE ADVANTAGES WITH THE REASONS.
1. They use waste from animals.
2. The soil is not exhausted.
A. Peas and soybeans renew the minerals in the soil.
our crop harvest?
What is the matter we put on the soil which makes crops grow ?
It is fertilizer.
chemical fertilizers natural fertilizers
SCANNING
1. What is organic farming?
Words preview
discovery focus
soil reduce root
n. 发现；发觉 n. 焦点；中心点 vt. 集中；聚焦 n. 土壤 vt. 减少；减缩 n. 根；根源
Words preview
skim underline summary comment
vt. 浏览；略读 vt. 画底线标出；强调 n. 总结；摘要；概要 n. 评论；议论 vi.& vt. 表达意见;
9.每隔几年
every few years
10.避免做…
avoid doing
1.supply. 1) 用作名词时： a) 指“供给;供应”等,其反义词为
demand (需求)。 supply and demand 供与求 be in short supply 供应缺乏,供应不足 food supply 食物供应 water supply 供水
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Show your summary to the whole class.
SUMMARY for reference
Scientists have recently discovered using chemical fertilizers for a long time can harm the land and also people’s health. Chemical fertilizers cause some problems. They harm the land, stay in the water for a long time and get into people’s bodies through their food. With these discoveries , organic farming is becoming more popular with farmers
• • • • • • • • • • • •
1 饥荒 2 烦人的 3 十年 4 努力 5 除去 6 感到满意 7 因此 8 集中 9 战斗 10 统计数字 11 扩大
Help me, help you, help everyone.
Unit 2 Working the land
Return GREEN to the earth!Class13 & Class 14
Senior One Guangdong Zhaoqing Middle School
Mr. Paul Zeng
Read the passage and answer the following questions.
1. Why are chemical fertilizers so popular in
farming today?
2. What problems can be caused by using chemical fertilizers? 3. What is organic farming? 4. What is the main reason for using organic
1饥荒 2 烦人的 3 十年 4 努力 5 除去 6 感到满意 7 因此 8 集中 9 战斗 10 统计数字 11 扩大
12 减少 13 导致 14 庄稼 15 产量 16 宁愿 17化学肥料 18 细菌 19 害虫 20 残留在 21 积累 22 营养
Байду номын сангаас• • • • • • • • • •
23 矿物质 24 发现 25 有机耕作 26 使…… 免受 27 多亏 28 高产量 29 交流 30 使具备 装备 31 国籍 32 职业
Paragraph One
Recently, however, scientists have been finding that long-term use of these fertilizers can cause damage to the land and, even more dangerous, to people’s health. In recent days, scientists have discovered that using chemical fertilizers for a long time can harm the land and also people’s health.
farming methods?
Answer the following questions.
1. Why are chemical fertilizers so
popular in farming today?
They are a great way to stop crop disease and increase production.
3. What is organic farming? Organic farming means growing crops without using any chemicals. 4. What is the main reason for using organic farming methods? The main reason for using organic farming methods is to grow good food and to avoid damaging the environment or people’s health.
Underline and reword topic sentences
• Find and underline the topic sentence of each paragraph. Rewrite each topic sentence, using your own words. Do not copy from the passage!
Skim the passage to find the main idea of the passage. Write it down in your own words.
Main idea of the passage
Chemical fertilizers can cause many problems, so organic farming is becoming more popular.
Paragraph Two
What are some of the problems caused by chemical fertilizers?
There are several problems caused by chemical fertilizers.
Paragraph Three
With these discoveries, some farmers and many customers are beginning to turn to organic farming.
and many customers. Organic farming uses no chemicals. There are many organic farming methods for making the land healthy and productive. All of these methods try to produce good food and to keep the environment and people healthy. (93 words)
Daily greetings 1.Have you ever gone shopping for vegetables? 2.How do you deal with them before eating them? 3. Why do you have to do so? 4. Can you say anything about green food?
True or False
• Listen to the text and choose True or False for the following statements.
True or False
• 1. To avoid damaging the environment is one of the main reasons for using organic farming methods. T • 2.To increase production is the main reason F for using organic farming methods. • anic farming means growing crops without using any chemicals. T • 4.Chemical fertilizers can only hurt people’s health. F • 5. There will be more organic farmers in the future. T
Swap summaries
• Swap summaries with your partners and give each other comments(评价). Check your partner’s summary for the main idea and topic sentences.
SUMMARY for reference In recent years, scientists have discovered several problems caused by chemical fertilizers, while organic farming, which can make the land healthy and productive, is becoming more popular. (27 words)
What is the substance we put on the soil which makes crops grow? It is fertilizer.
How many kinds of fertilizers do farmers use? There are two kinds. They are chemical fertilizers and natural ones.
2. What problems can be caused by using chemical fertilizers? They can damage the land by killing helpful bacteria and pests and by staying in the ground and underground water for a long time. They damage people’s health by building up in their bodies and leading to cancer or other illnesses.