四川邮电职业技术学院教案专用纸 Teaching Content Teaching Contents Time Apparatuses I. Revision mins computer, 上节课主要学习了第14单元关于 The public telecommunications Network的知识。 projector, Teacher uses the following exercises to help the students to revise the important expressions or phrases learnt last time. Teacher: When I say a phrase or an expression in Chinese, you respond 3 mins speaker, by giving an English equivalent you learnt in unit 14. Teacher (Chinese Student (English) auallo-visu 公众信息网 public telecommunications network language 外部呼叫 external call 收费中心 电话用户 telephone subscriber blackboard, 音频电路 voice- frequency circuit recorder, 双绞线 twisted pair DVD, 数据流量 II. Pre-reading Activities Brief introduction about ISDN 1. What is ISDN? ging ISDN, which stands for Integrated Services Digital Network, is a system of digital phone connections which has been available for over a decade. This system allows voice and data to be transmitted simultaneously across the world using end-to-end digital connectivity 2. The features of ISDN ISDN allows multiple devices to share a single line. It is possible to combine many different digital data sources and have the information routed to the proper destination. Since the line is digital, it is easier to keep the noise and interference out while combining these signals. IsdN technically refers to a specific set of digital services provided through a single, standard interface Without IsdN, distinct interfaces are required instead III. While-reading Activities i. New Words And phrases Students read the new words and phrases aloud one by one after teacher. (3 minutes ii. Text organization Page 3 of 9 Teaching Plan of English for Telecommunications Unit 15四川邮电职业技术学院教案专用纸 Page 3 of 9 Teaching Plan of English for Telecommunications Unit 15 Teaching Content Contents Time Teaching Apparatuses I. Revision 上节课主要学习了第 14 单元关于 The Public Telecommunications Network 的知识。 Teacher uses the following exercises to help the students to revise the important expressions or phrases learnt last time. Teacher: When I say a phrase or an expression in Chinese, you respond by giving an English equivalent you learnt in unit 14. Teacher (Chinese) Student (English) 公众信息网 public telecommunications network 外部呼叫 external call 收费中心 toll center 电话用户 telephone subscriber 音频电路 voice- frequency circuit 路由 route 双绞线 twisted pair 数据流量 data traffic II. Pre-reading Activities Brief introduction about ISDN. 1.What is ISDN? ISDN, which stands for Integrated Services Digital Network, is a system of digital phone connections which has been available for over a decade. This system allows voice and data to be transmitted simultaneously across the world using end-to-end digital connectivity. 2. The features of ISDN. ISDN allows multiple devices to share a single line. It is possible to combine many different digital data sources and have the information routed to the proper destination. Since the line is digital, it is easier to keep the noise and interference out while combining these signals. ISDN technically refers to a specific set of digital services provided through a single, standard interface. Without ISDN, distinct interfaces are required instead III. While-reading Activities i. New Words And Phrases Students read the new words and phrases aloud one by one after teacher.( 3 minutes) ii. Text organization 3 mins 3 mins 60 mins computer， projector， loud speaker， audio-visual language teaching system， blackboard， recorder， DVD， radio， hanging chart， model