英语选择性必修 第一册Unit 5 Revealing nature教学设计及反思

这是一份英语选择性必修 第一册Unit 5 Revealing nature教学设计及反思，共11页。教案主要包含了设计意图等内容，欢迎下载使用。
Develping ideas部分分为两部分：第一部分是一篇说明文，介绍了不同植物之间的交流方式，尤其是“植物万维网”通过地下真菌连接而成，植物间可以彼此交流信息甚至分享食物，但也会散播有毒物质攻击其他植物。通过学习，引导学生探索大自然的未知领域。第二部分为观察日志，鼓励学生通过研读记录水仙花生长过程的日志，观察向日葵的生长过程并仿写日志，培养学生对植物的兴趣，进而热爱植物、研究植物、保护植物。
Presenting ideas部分选取了几个自然纪录片中的动植物介绍，让学生了解不同物种的特点、生存现状。同时，推荐一部自己喜欢的自然纪录片。
课时目标：
1.掌握本课时的重点词汇myth、detect、link、as well as、cmmunicate with、drive away、side by side、face up、cntribute t以及重要句型，并能熟练运用。
2.掌握描述性说明文的文体特征及拟人的修辞手法，并根据自己的观察写一篇日志。
3.了解植物神秘的交流方式，促使学生进一步研究植物，研究大自然，热爱大自然，加深对单元主题意义的认识。
重点难点:
重点：
1.掌握重点词汇myth、detect、link、as well as、cmmunicate with、drive away、side by side、face up、cntribute t的用法。
2.了解植物观察日志及写作技巧。
3.推荐一部喜欢的自然纪录片。
4.引导学生通过学习文章，理解文章传递的信息：观察自然、勇于实践、勇于探索。
难点:
观察日志的写作技巧。
教学准备：
教师准备：
1.准备好该部分内容的PPT和相关资料。
2.有关植物间相互交流的更多事例。
学生准备：
1.用简短的英语描述植物间的交流方式。
2.上网查资料：植物间的交流方式。
教学过程：
Step I Lead-in
1. Lk at the pictures and tick what plants can d.
2.Talk abut what else yu think plants can d and give examples.
【设计意图】通过图片，引发学生的思考，将话题带入植物的行为，自然导入后面要学习的文章。
Step Ⅱ Reading
1.Fast reading.
(1) Read the passage and find ut the ways in which plants cmmunicate.
(2) Match the parts with the main ideas.
①Part1(Paras.1~2)_________________________________________________
②Part2(Paras.3~5)_________________________________________________
③Part3(Para.6)____________________________________________________
【设计意图】通过设置段意匹配题目，引导学生提取段落的关键信息，同时也提高概括和归纳能力。
2.Careful reading.
(1) Read the passage carefully and answer the questins.
（2）Read the passage again and tell what yu learnt frm it.
【设计意图】通过阅读文章选择正确答案，加深了对主题意义的理解。说出自已从文中学到的内容则是说出自已的感受，类似于读后感，比复述课文又增加了难度，是更高的一种语言表达形式，是深层加工文章、升华文章的过程。
（3）Language pints.
Master the wrds and phrases：
myth，detect，link，as well as，cmmunicate with，drive away，side by side，face up，cntribute t
【备注】词汇知识点讲解详见第二教案“新知探究”。
3.Pst-reading
(1) D Activity 3 n Page 58.
Organise infrmatin frm the passage and cmplete the diagram.
Mdern research is shwing that plants can①____________.
Using chemicals
·The plant releases chemicals②__________ that are being eaten.
·When anther plant detects the chemicals. it starts t③___________.
Using sund
·Sme plants make nises④__________.
·A chilli plant can⑤___________.
·Sme trees make⑥___________.
Using the“wd wide web”
·This fungal netwrk links⑦____________.
·Plants can ⑧_________ with each ther.
·Plants can⑨________t attack ther plants
Maybe ne day we will be able t “talk” with plants.
【设计意图】该题以思维导图的形式将植物间传递信息的方式分为三类，简单明了，让学生根据关键词回扣原文，通过原文定位法找到答案，锻炼学生获取关键信息的能力
（2）D Activity 4 n Page 58.
Befre ding the activity，teacher explains persnificatin t students.
Wrk in grups. Give a talk abut cmmunicatin between living things.
【设计意图】通过拟人的手法让学生对植物之间的交流进行描述，有助于学生加深对主题的理解，进一步保护自然、爱护大自然。
Step Ⅲ Writing an bservatinal jurnal
1. D Activity 5 n Page 59.
Read the bservatinal jurnal and answer the questins.
·Hw were the daffdil bulbs planted?
·In what envirnment did the leaves grw?
·What d the flwers lk like?
2. D Activity 6 n Page 59.
(1) Wrk in pairs. Lk at the pictures and talk abut hw the sunflwer grws.
(2) Write yur bservatinal jurnal abut the sunflwer.
3.D Activity 7 n Page 59.
Wrk in pairs.Make imprvements t each ther’s bservatinal jurnals and share them with the class.
【设计意图】该部分通过具体的观察日志的实例展示，教会学生观察日志的写作方法和包含要素，然后展示图片，让学生认真观察，并写出观察日志，达到学以致用的目的。
Step IV Presenting ideas
1. Wrk in grups. Lk at the infrmatin abut the nature dcumentaries and answer the questins.
·Can yu guess what secrets f nature are revealed in these dcumentaries?
·What ther nature dcumentaries have yu watched?
Which ne d yu like mst? Give yur reasns.
2. Chse ne nature dcumentary yu like and cmplete the ntes.
3.Practise presenting infrmatin abut yur dcumentary. Cnsider the fllwing：
（1）the structure f yur presentatin
（2）useful wrds，expressins and structures
4.Give yur presentatin t the class.
【设计意图】该部分通过观察图片，思考以前曾经看过的关于自然界的纪录片，并通过记述要点的形式记录自己喜欢的纪录片。根据提示，完成纪录片的要点描述，并向全班展示，进一步提高学生的书面表达能力和分享意识。
Step V Hmewrk
Review the language pints learnt in class.
板书设计：
□ attack
□ mve
□ breathe
□ speak
□ eat
□ steal
□ sleep
□ think
Suggested answers：
Plants can cmmunicate with each ther by using chemicals, sund and“wd wide web”.
A. Different ways f cmmunicatin plants using.
B. Scientists’ new research abut talking plants.
C. Maybe ne day we will knw enugh abut plant cmmunicatin t be able t “talk”with plants.
Suggested answers：
①B ②A ③C
①Which ne is the scientific new research?
A. Plants can really talk with each ther.
B. Talking trees can give advice and warnings.
C. Trees can talk with animals and peple.
D. Plants have the ability t cmmunicate with each ther.
②When will plants use chemicals t cmmunicate with each ther?
A. When they feel thirsty.
B. When they need fertilizer.
C. When they get threats frm uter envirnment.
D. When they hear nises and send signals t call r help.
③Which is the secnd methd plants using t cmmunicate mentined in the passage?
A. Send chemicals t call fr help.
B. Use sund t give signals t their neighburs.
C. Link nearly all plants in a frest with webs.
D. Cntact each ther t warn f threats.
④In which way is the wd wide web similar t the Internet?
A. Bth can link all things in the system tgether.
B. Bth have the same cmmunicating systems.
C. Bth bring cnvenience t peple’s life.
D. Bth need advanced science and technlgy.
⑤What’s the main idea f the passage?
A. Plants als have secrets.
B. Plants can talk with animals and peple.
C. Plants need prtecting urgently.
D. Plants can cmmunicate in their wn way.
Suggested answers：
①D ②C ③B ④A ⑤D
Suggested answers：
①cmmunicate with each ther
②frm the leaves
③release its wn, different chemicals
④with their rts
⑤tell if a neighburing plant is helpful, r unfriendly
⑥clicking nises when there is nt enugh water, indicating drught is arriving
⑦the rts f different plants t each ther
⑧share infrmatin and even fd
⑨steal fd frm each ther, r spread pisns
①Read the passage again and talk abut hw plants cmmunicate.
②Think abut and discuss the fllwing ways f cmmunicatin in the animal wrld.
·Bees“dance”t signal t ther bees that they have fund fd.
·Ants cmmunicate with each ther thrugh tuch，chemical signals, mving their bdies and even using their legs t make sunds.
What ther ways can yu think f?
③Organise yur ideas fllwing the steps belw.
·Begin with what living things yu have chsen t talk abut.
·Explain hw they cmmunicate and give examples.
·Cnclude by explaining what we have learnt frm their behaviur.
④Give a talk t the class abut cmmunicatin between living things.
Suggested answers：
·They were planted side by side in sil, with the pinted ends facing up.
·The leaves grew in a sunny, but cl place.
·The flwers are yellw and white, and shaped like trumpets.
1 June
6 July
26 July
Suggested answers：
An bservatinal jurnal abut the sunflwer
1 June
Cvered with 1~2 cm f mist sil, the sunflwer seed takes a few days t cme up after being planted. Water has been added regularly and the hard seed cat sftens in the damp sil t allw the first rt t pierce dwnwards and the first leaves t push t the sil surface.
6 July
The rt cntinues t grw dwnwards. The single stem grws hllw and smth, revealing large spade-shaped leaves frm the grwing tip. Gradually, the plant’s grwing tip reveals the first hints f develpment f the flwer bud. The plant stem becmes mre wdy.
26 July
Abut three weeks after the flwer bud first becmes visible at the tip f the sunflwer stem, it enlarges and begins t reveal a flattened disc. Over the curse f ne week, the yellw ray flrets, the disc flrets blm acrss the cre f the sunflwer blssm. It is yellw, lking beautiful.
life
(2009,UK)
Brn in china
(2016, China, US&UK)
The Private Life f Plants
(1995,UK)
Big Cats
(2018,UK)
Title：___________________________________________________________
Main theme：_____________________________________________________
Reasns yu recmmend it：________________________________________
________________________________________________________________
________________________________________________________________
Unit5 Revealing nature
Perid Ⅲ Develping ideas & Presenting ideas
I. Lead-in
1. Lk at the pictures and tick what plants can d.
2. Talk abut what else yu think plants can d and give examples.
Ⅱ. Reading
1. Fast reading.
2. Careful reading.
3. Pst-reading.
Ⅲ. Writing an bservatinal jurnal
IV Presenting ideas
V. Hmewrk