外研版（2019）必修第三册Unit 3 The world of science Developing ideas 教案

课题：B3U3 Reading：Developing ideas 课型： 新授课 课时： Period 1-2
授课班级：高 届 班 授课人： 授课时间：
学习目标：
Ss can acquire the facts of Benjamin’s experiment;
Ss can distinguish the true and false information of the experiment;
Ss can have a better understanding of scientific spirits;
Ss can think critically about what we have read and heard.
教学重点：
Ss can acquire the facts of Benjamin’s experiment.
教学难点：
Ss can distinguish the true and false information of the experiment.
教学准备：
1. Multi-media; 2. Blackboard & chalk; 3. Textbook ,etc.
教学过程：
Step1. Lead-in
【教师活动】
Greetings；
Guess Time: Give Ss some clues and ask them to guess who the man is.
He is one of the Founding Fathers of the United States.
He helped draft the Declaration of Independence and the US Constitution.
He was a leading American writer, printer and publisher, successful diplomat(外交官), creative scientist and inventor.
He helped America become a new country.
【学生活动】
Ss guess the name of the man based on the clues given by the teacher.
【设计意图】
To activate Ss’ background information about Benjamin Franklin.
Step2. Pre-reading
【教师活动】
Guide Ss to predict what will be mentioned in the text according to the title and the picture.
【学生活动】Ss look at the title and the picture, and then make a prediction of the content.
【设计意图】To develop Ss’ reading ability to predict the main idea of an article.
Step3. Fast Reading
【教师活动】Ask Ss to read the text quickly and answer the questions.
Q1: What’s the author’s view on the story of the experiment
Q2: What’s the genre of the passage
Q3: What’s the structure of the passage
【学生活动】
Read the passage and answer the questions. If necessary, exchange ideas in groups.
【设计意图】
To develop Ss’ reading skill of skimming as well as the awareness of asking others for help.
Step4. Careful Reading
Task1:
【教师活动】
Ask Ss to review the process of the lighting experiment conducted by Benjamin Franklin.
【学生活动】
Ss read the passage to find out the materials and procedure of the experiment.
【设计意图】
To help Ss clearly understand the main process of the experiment.
Task2:
【教师活动】
Ask Ss to read the passage carefully and find out the answers to the questions.
Q1: Why was Benjamin’s experiment not entirely true
A1:
Q2:Why do scientists question accepted ideas
A2:
Q3:What is the author’s attitude towards such fictional stories Why
A3:
Q4: What is the author’s conclusion from the story
A4:
【学生活动】
Ss read the passage to find out the answers to the questions.
【设计意图】
To develop Ss’ reading ability of scanning and know more about the detailed information.
Step5. Post-Reading
Task1:
【教师活动】
Ask Ss to number the statements to show how people’s attitudes towards Franklin’s experiment have changed.
【学生活动】 Ss number the statements based on their undertstanding of the text.
【设计意图】Check Ss’ understanding of the text.
Task2:
【教师活动】
Ask Ss to discuss the questions in groups.
Q1: What scientific spirits do you think a great scientist should have？
A1:
Q2: In what ways do scientist's spirits contribute to the society
A2:
【学生活动】
Ss have an active discussion about the questions with their group members.
【设计意图】
To help Ss form the awarenesss of group cooperation and offer them an opportunity to exchange their ideas.
Step6. Summary
【教师活动】
Guide Ss to sum up what they have learnt about the passage.
【学生活动】
Try to summarize the content of this class with the guidance of the teacher.
【设计意图】
Exercise Ss’ ability of oral expression.
Step7. Homework
Write a short passage within 80 words about the truth of the lighting experiment.
板书设计：
课后反思：
二次备课补充：