山东省泰安市肥城市第三中学高中英语 Unit 4 Astronomy the science of the strars阅读学案 新人教版必修3.doc

山东省泰安市肥城市第三中学高中英语 Unit 4 Astronomy the science of the strars阅读学案 新人教版必修3‎ 教学内容 学习目标: ‎ ‎1．知识与能力：To grasp the main idea of the passage by making use of some reading skills ‎2.过程与方法：To grasp the main idea by self-directed learning ,discussion ,cooperation ‎3.情感态度价值观: To know the importance of protecting the earth and environment 学习重点: To learn more knowledge about how life began on the earth 学习难点: To learn more knowledge about how life began on the earth ‎【学案使用说明】请充分预习课文，结合词典及课后单词表完成此学案。‎ 学习指导 即时感悟 ‎【课前预习】‎ Each religion and culture has its own ideas about how life began on earth. What do you know ?‎ ‎【自主 合作 探究】‎ Step 1 Fast Reading ‎ ‎1.What’s the main idea of the text? ‎ A.A brief introduction on how human beings were born. ‎ B. A brief introduction on the birth of the universe and life on the earth. ‎ C. The “Big Bang” had a great effect on the birth of the earth. ‎ 通过本环节,督促学生深入教材，并查阅资料，为本节课话题积累相关知识。‎ 5‎ D. The appearance of human beings was a disaster to the earth. ‎ ‎2. Scan the text and decide what the writing style of the text is?‎ A. Narrative 记叙文 B. Explanation 说明文 C. Essay 散文 ‎3.Match the main idea for each paragraph.‎ Paragraph 1: a. The importance of water for life ‎ Paragraph 2: b.The development of plants and animals on the earth ‎ Paragraph 3: c.The formation of the earth ‎ Paragraph 4: d.A widely accepted theory about ‎ ‎ the formation of the universe ‎ Paragraph 5: e. The arrival of humans and ‎ their impact on the earth Step 2 Detailed-reading Read the text carefully and look for the detailed information Task1.Paragraph 1:‎ Answer the following questions to understand the formation of the universe:‎ Q1: How did the universe begin?‎ ‎__________________________________________________ ‎ Q2: What happened after the “Big Bang”? __________________________________________________ ‎ Q3: What does “bodies” mean here?‎ A. Persons or animals’ bodies     B. Planets and stars Task2.Paragraph 2:‎ Answer the following questions to understand the formation of the earth and the appearance of water:‎ My questions in this class:‎ ‎_________‎ ‎__________‎ My answers 5‎ Q1:‎ Time ‎ ‎ What is the earth like?‎ several billion years after the Big Bang between 4.5 and 3.8 billion years Q2:Which sentence in the text is closest in meaning to the following one?‎ It is more important that when the earth cooled down, water started to appear.‎ ‎_________________________________________________________‎ Task3.Paragraph 3 ‎ True or false(find out the information).‎ Read Paragraph 3 to understand the importance of water.‎ ‎(    ) Water on the earth disappeared later.‎ ‎(    ) It was obvious that water is necessary and important to the development of life.‎ ‎(    ) Water was helpful in dissolving the harmful gases and acids into the oceans and seas.‎ Task4.Paragraph 4-5:‎ Read Paragraph 4-5 to understand the development of life.‎ After many millions of years _______(on the surface of the water)began to appear→they encouraged the development of and fish→green ‎ after my researches:‎ ‎__________‎ ‎__________‎ ‎___________‎ ‎___________‎ ‎____________‎ The keys after discussions in my co—group:‎ ‎___________‎ ‎_____________‎ ‎___________‎ ‎__________‎ 5‎ ‎ plants began to grow on land→land animals( and )followed → appeared for the first time→after that, huge animals( )developed→the rise of on the earth→finally clever animals with and ‎ ‎【当堂达标】 Fill in the blanks according to the text:‎ After the “Big Bang”, the earth was just a cloud of dust.‎ It loudly with fire and rock, which were _________to produce the water vapour, ___________ and other gases. Then small plants grew. They ___________and filled the oceans and seas with oxygen. Many millions of years later， the first green plants began to ________on land. When the plants grew into forests, reptiles appeared for the first time. They produced young generally by _________eggs. ‎ When dinosaurs disappeared, mammals became more i_________. Now small clever animals with_____________ appeared and ___________ all over the world. As time went by, they covered the earth and they are putting too much carbon dioxide into the__________, which ________heat_________ the earth into space. Whether life will continue on earth for millions of years to come will ________whether this problem can be solved.‎ ‎【总结提升】Discussion As a student，what little things can we do to protect the earth?‎ ‎【拓展延伸】Homework ‎1. Read aloud the reading passage and underline the useful phrases and sentence patterns.‎ ‎2. Preview using language.‎ 5‎ 答案：‎ B B Dcabe With a big bang Actions began to form and combine to create stars and other bodies.‎ B A cloud of dust a solid globe What’s even more important is that as the earth cooled down,water began to appear on its earth.‎ FFT Small plants shellfish insects amphibians reptiles dinosaurs mammals heads feet Exploded in time carbon dioxide multiplied appear laying important hands feet spread atmosphere prevents from depend on ‎ ‎ ‎ 5‎