Chapter 4 The world of numbers
chapter 4 the world of numbers
(intensive reading)
teaching aims:1. to get furthering learning about the passage, learn the 12 phrases in the text.2. know how to use the phrases.3. to learn how numbers developed with the times.teaching key point:the 12 phrases in the textteaching difficult points:1. phrase: help sb. do sth.2. recite the passage.teaching procedures:步驟目的教師活動學生活動條件/手段step1. revisioncheck the homework and prepare for the lesson.1. guide the students to use reading skills. (it is a passage about a clock.)tell and check the answers of this reading.blackboard step2.lead-in 1.get close to the ss 2. create an easy atmosphere 3. lead into the lesson1. ask ss what’s the topic of the passage? (a clock) 2. show a clock to show we use numbers to tell the time. ask ss “where can we see numbers?”1. answer the question. 2. free talk: “where can we see numbers?”computerstep3.intensive reading 1. get the further learning about numbers. 2. get the idea how ancient people wrote numbers in many different ways. 3. train the ss’ intonation; get a better understanding of the character. 4. educate ss to be careful. 5. educate ss’ ability of analysis. 6. educate ss’ ability of analysis. 7. the computers are very powerful.
8. train their discussing ability.
1. ask students to answer a question: how many languages do you know?2. a. ask students to read para1 to understand how ancient people wrote numbers in many different ways. (show a picture of different numbers)b. ask ss to find the similar of ancient numbers.3. ask a student to read para2. and the other students to correct his or her intonation. and then show a picture to help the ss to understand what the system of numbers today is. ask a question: what’s the importance of the invention of the zero?