Unit-2- Connect With Others

Shiksha Kendra, 2, Community Centre, Preet Vihar, Delhi-110 092 India

CBSE-i

Connect with Others

ICT

CLASS

UNIT-2IV

CENTRAL BOARD OF SECONDARY EDUCATION

CBSE-i


Connect with Others

ICT

CLASS

UNIT-2IV

The CBSE-International is grateful for permission to reproduce and/or translate copyright material used in this publication. The acknowledgements have been included wherever appropriate and sources from where the material has been taken duly mentioned. In case anything has been missed out, the Board will be pleased to rectify the error at the earliest possible opportunity.

All Rights of these documents are reserved. No part of this publication may be reproduced, printed or transmitted in any form without the prior permission of the CBSE-i. This material is meant for the use of schools who are a part of the CBSE-International only.

Education plays the most important role in acquiring professional and social skills, and a positive attitude towards face the challenges of life. Curriculum is a comprehensive plan of any educational programme. It is also one of the means for bringing about qualitative improvement in an educational system. The Curriculum initiated by the Central Board of Secondary Education-International (CBSE-i) is a progressive step in making the educational content responsive to global needs. It signifies the emergence of a fresh thought process in imparting a curriculum which would restore the independence of the learner to pursue the learning process in harmony with the existing personal, social and cultural ethos.

The CBSE has introduced the CBSE-i curriculum as a pilot project in a few schools outside India in 2010, in classes I and IX and extended the programme to classes II, VI and X in the session 2011-12. It was further extended to classes III, VII and for Senior Secondary classes with class XI in the session 2012-13. It is going to be introduced in classes IV, V, VIII and XII in the session 2013-14 in the schools outside India and in classes I, II and III in the schools within the country.

The Senior Secondary stage of education determines the course of life of a student. At this stage, it becomes extremely important for students to develop the right attitude, a willingness to learn and an understanding of the world around them and to be able to take the right decisions for their future. The senior secondary curriculum is expected to provide the necessary base for the growth of knowledge and skills, and thereby enhance a student's potential to face the challenges of global competitiveness. The CBSE-i Senior Secondary Curriculum aims at developing the desired professional, managerial and communication skills as required in of the world of work. CBSE-i is for the current session offering curricula in ten subjects i.e. Physics Chemistry, Biology, Accountancy, Business-Studies, Economics, Engineering Graphics, Home Science, Computer Science, Information Practices, ICT, English, Mathematics I and Mathematics II. Mathematics at two levels caters to the differing needs of students of pure sciences and commerce. The curriculum has been designed to nurture multiple intelligences like linguistic or verbal intelligence, logical mathematical intelligence, spatial intelligence, sports intelligence, musical intelligence, inter-personal intelligence and intra-personalintelligence.

The Core skills are the most significant aspects of a learner's holistic growth and learning curve. The objective of this part of the core of curriculum is to scaffold the learning experiences and to relate tacit knowledge with formal knowledge. This involves trans-disciplinary linkages that would form the core of the learning process. Perspectives, SEWA (Social Empowerment through Work and Action), Life Skills and Research would be the constituents of this 'Core'.

The CBSE-i Curriculum evolves by building on learning experiences inside the classroom over a period of time. The Board while addressing the issues of empowerment with the help of the schools administering this system, strongly recommends that practising teachers become skil ful and lifelong learners and also transfer their learning experiences to their peers through the interactive platforms provided by the Board. The success of this curriculum depends upon its effective implementation and it is expected that the teachers will apply themselves to creating better facilities, developing linkages with the world of work and fostering conducive environment, as per the recommendations of the curriculum document.

I appreciate the effort of Dr. Sadhana Parashar, Director (Academics, Research, Training and Innovation), CBSE, and her team involved in the development of this document. I specially appreciate the efforts of (Late) Dr. Srijata Das for working tirelessly towards meeting deadlines.

The CBSE-i website enables all stakeholders to participate in this initiative through the discussion forums. Any further suggestions on improving the portal are always welcome.

Vineet JoshiChairman, CBSE

Preface

Acknowledgement

Chief Co-ordinator: Ms. Kshipra Verma, EO

Co-ordinators :

Material Production Groups: Class IV

Advisory

Shri Vineet Joshi, Chairman, CBSE

Dr. Sadhana Parashar, Director (Academics, Research, Training and Innovation), CBSE

Conceptual Framework

Shri G. Balasubramanian, Former Director (Acad), CBSE

Ms. Abha Adams, Consultant, Step-by-Step School, Noida

Dr. Sadhana Parashar, Director (Academics, Research, Training and Innovation), CBSE

Ideators: Classes I-V

Dr. Indu Khetarpal

Sh. Akshay Kumar Dixit

Ms. Somya Gulati

Ms. Anita Makkar

Dr. Om Vikas

Ms. Rupa Chakravorty

Dr. Rajesh Hassija

English:

Hindi:

Ms. Deepti Verma

Ms. Mahua Bhattacharya

Ms. T Shimrah

Ms. Henna Sehgal

Ms. Kavita Lal

Dr. Usha Sharma

Ms. Veena Sharma

Sh. Akshay Kumar Dixit

Mr. Sanjeev Dahiya

Physical Education:

Gen Science:

Performing and Visual Arts:

Mathematics:

Ms. Charu Maini

Ms. Neeraj Punia

Ms. Deepa Aneja

Mr. Reji MK

Ms. Jyoti Chadha

Ms. Kalyani Voleti

Ms. Geetika Datta

Ms. Geeta Kanwar

Ms. Parul Makkar

ICT:

Social Studies:

Ms. Ritu Arora

Ms. Swati Panhani

Ms. Chanchal Chandna

Ms. Shally Arora

Ms. Ruba Chakraborty

Ms. Ruchira Ahlawadi

Ms. Kanupriya Wahi

Core-SEWA:

Ms. Vandna

Ms. Nishtha Bharati

Ms. Seema Chopra

Ms. Madhuchhanda

Ms. Reema Arora

Ms. Neha Sharma

(Late) Dr. Srijata Das, EO

Mr. Sanjay Sachdeva, Desk Officer

Mr. Navin Maini, RO(Tech)

Ms. Savinder Kaur

Ms. Neha Sharma, Deputy Director

Shri Al Hilal Ahmed,Assistant Professor / Deputy Director

Preface

Acknowledgment

Introduction 1

Teachers Notes 1

Lesson Plan - A 8

Lesson Plan - B 9

Lesson Plan - C 10

Rubrics 12

Teachers Resource Material 13

Study Material 15

Students Worksheets 18

Glossary 21

Websites 21

Contents

1

Class IV

Unit 2: Connect with Others

Introduction

We know the importance of communication in our lives. To express our views and

ideas we need to communicate with our friends and family members. We are living in

the world of Computers. Hence computers are becoming an important means of

communication. In this chapter we will familiarize ourselves with the use of computer

networks and how computers in a network communicate.

Teachers Notes

This chapter requires teacher to make students understand the meaning of the terms

network and communication medium.

General Objectives:

Learn the meaning of the term communication

Understand the concept of the computer networks

Know different ways of connecting computers in a network

Specific Objectives:

Students will be able to

use computer as a mode of communication using chat and email

use computers to share information with friends

Share hardware like printer on a network

TOPICS

a. What is Communication

b. How are computers connected

c. Computers on the move

2

Mapping of Course Outcomes with skills and intelligence attributes

TOPIC Skills Attributes Intelligence Attributes

S1 S2 S3 S4 S5 S6 S7 I1 I2 I3 I4 I5 I6

What is Communication

How are computers

connected

Computers on the move

Strongly Contributing

Weekly Contributing

Not Contributing

Desirable Attributes

Skills Attributes Intelligence Attributes

S1 Cognitive Skill

S2 Creative/Aesthetic Skill

S3 Problem Solving Skill

S4 Team/Collaboration Skill

S5 Communication Skill

S6 Critical Thinking Skill

S7 Ethical Skill

I1 Spatial Visualization Intelligence

I2 Logical Reasoning Intelligence

I3 Interpersonal Intelligence

I4 Linguistic Intelligence

I5 Naturalistic Intelligence

l6 Kinesthetic

3

Topics: Activities, Skills and Intelligence Attributes

Topic (A): What is Communication Duration: 2 Periods

Skills

(related to the

subject)

Activity and Aim Multiple Intelligences

Incorporated

Cognitive skill Activity: Watching a video on

computer networks.

http://www.youtube.com/watch?

v=gVj1uIzyEfE

Aim: To learn what is

communication and various ways of

communication.

Spatial visualization

Problem Solving Activity: Tell students to do some

activity where they have to share

things like pencils, crayons etc but

they are not allowed to talk while

asking for the things.

Aim: To teach students the

importance of communication while

sharing.

Linguistic, spatial

visualization, kinesthetic,

Team/Collaboration Skill

Activity: Tell students to draw

something and give a print

command to print their work on a

common printer being shared on the

LAN.

Aim: To teach students the

importance of computer

communication as a tool for sharing

hardware.

Kinesthetic,

Team/Collaboration Skill

4

Learning Outcomes:

The students will develop the ability to:

Understand the meaning of the term communication and various ways of

communication

Material Required:

1. Computer System

2. Internet connectivity

3. Local Area Network

Trans disciplinary Activities

Subject Activity

English Language as a means of communication.

Critical Thinking:

How the voice while communicating with their friends travels.

Why the strength of voice decreases with distance.

Life Skills/SEWA:

Discuss the rules for effective communication.

Topic (B): How are computers connected Duration: 2 Periods

Skills

(related to the

subject)


Incorporated

Cognitive skill Activity: Watching a video on

computer networks.

http://www.youtube.com/watch?

v=TVvEheZVwdg

Aim: To learn what a computer

network is and how computers are

connected.


5

Communication Activity: Make all the students stand

and arrange themselves in a circle.

And one student in the center of the

circle. All the students can create a

link to the student standing in the

center of the circle using a rope. To

demonstrate structure of a network

Aim: To acquaint students with the

terms like server and node on a

network by giving the example of

the student standing in the center as

server and other children as nodes in

the network.

Linguistic, spatial

visualization, kinesthetic

Learning Outcomes:


Understand the need of a communication medium

Differentiate between wired and wireless connectivity

Understand the difference between different types of network

Material Required:

1. Computer System



Subject Activity

Science Various devices used in network like telephone, fax machine,

Critical Thinking:

How data travels from one computer to another through wires.

Discuss with students the threats involved while working on a network.

6

Life Skills/SEWA:

Chatting to friends using IM, in chat rooms and on social networking sites can be great

ways to keep up to date. Social networking sites are used by people worldwide to post

information, display photos, tell people what theyve been up to, chat and play games.

But while there are lots of good points about keeping in touch with online friends, there

are also some risks with meeting people onlineespecially if you dont know them in

real life.

Discuss the precautions to be followed while chatting on social networking sites.

Topic (C): Computers on the move Duration: 2 Periods

Skills

(related to the

subject)


Incorporated

Cognitive skill Activity: Ask students questions

about how these days people carry

portable computers from one place

to another and still able to be in

contact with their friends.

Aim: To learn about wireless

connectivity between computers on

a network.


Creative, Critical

thinking

Activity: Play a game where

students stand in two groups and a

student from a group is given a

word which he needs to enact

without speaking. Other team

members of the same group have to

guess the word. If they are able to

then they get points.

Aim: To make students understand

that it is not essential that the

computers in a network are

Linguistic, spatial

visualization, kinesthetic

7

connected through wires but they

can connect without wires also and

hence computers can be part of a

network when moved from one

place to another.

Learning Outcomes:


Understand the importance of mobile computing

Appreciate the use of a wireless network

Material Required:

1. Computer System



Subject Activity

Science Mobile phones as an example of communication device making

use of a wireless connectivity.

Critical Thinking:

How data travels from one computer to another without wires.

Discuss with students the threats involved while working on a wireless network.

Life Skills/SEWA:

Chatting to friends using IM, in chat rooms and on social networking sites can be great

ways to keep up to date. Social networking sites are used by people worldwide to post

information, display photos, tell people what theyve been up to, chat and play games.

But while there are lots of good points about keeping in touch with online friends, there

are also some risks with meeting people onlineespecially if you dont know them in

real life.

Discuss the precautions to be followed while chatting on social networking sites.

8

LESSON PLAN

Lesson Plan A

Topic A: What is Communication?

Duration: 2 Periods

Brief Description: This lesson aims to make students aware of the use of

communication between the computers. Students should able to appreciate the

importance of communication in our life. As communication between people makes

them share ideas and thoughts similarly communication between computers make

them share information and resources.

Learning Objectives:

Students will be able to know

The importance of communication

The role of computers as a faster mean of communication between people

Material Required:

1. Computer System

2. Local Area Network

3. Internet

Teacher Activity:

Discuss with the students that communication is essential when they want to

share some information or thoughts.

Explain that computers also communicate when they have to share some

information

Now teacher can give the demonstration of the given video link to show various

devices that can be used for communication

Student Activity: Students can use their computer lab LAN to take print of their work

on the common printer shared over the network.

9

Review: The Teacher carries out the class performance analysis and reviews the lesson

with emphasis on comprehension-hard concepts.

Assessment: Evaluation of Students worksheets. The Teacher may encourage the

students for self-assessment of the assignments and makes comments for improvement

based on his/her assessment.

Lesson Plan B

Topic B: How are computers connected?

Duration: 2 Periods

Brief Description: This lesson aims to make students understand the need of a

connectivity medium between computers on a network. And the different ways in

which computers can be connected.


Students will be able to:

Understand that either a wired or wireless connectivity is required between

computers to form a network

Know about the different types of wired and wireless connectivity

Material Required:

1. Computer System

2. Different types of wires used for connectivity

3. Wifi connectivity

Teacher Activity:

Discuss with the students that air acts as medium to transmit voice of one person

to another.

Explain that computers can be connected through different types of wires.

Explain that computers can communicate in wireless environment also

Now teacher can give the demonstration of the given video link.

10

Student Activity:

Let the students imagine that a boy named Nihal wants to play with the Jabalani

football of his friend Mahesh, who lives quite far from his house, and that there

is a underground tunnel that allows him to reach far places rapidly. He will only

have to enter the tunnel and he will almost instantly Maheshs house to play

football, then he will be able to come back at any moment.

Now ask the children to imagine that the houses of all the children around the

world connected through this tunnel, allowing them to enjoy the toys of every

child at any time, as long as the child allows it, of course.

Each child will be able to decide whether he wants to share or not his toys at the

tunnels entrance, or indicate which children can come and play with his toys.

Now tell the students that not every house has a tunnel and that is possible that

many kids want to play with the same toy at the same time and that its not

possible to break other kids toys.

Let the students visualize the given scenario and they can also enact it out.




students for self assessment of the assignments and makes comments for improvement


Lesson Plan C

Topic C: Computers on a move

Duration: 2 Periods

Brief Description: This lesson aims to make students understand the importance of

wireless connectivity medium between computers on a network. And the different

ways in which computers can be connected.

11


Students will be able to

Understand the importance of mobile computing

Appreciate the use of a wireless network

Material Required:

1. Computer System

2. Different types of wires used for connectivity

3. Wifi connectivity

Teacher Activity: Teacher can give a demonstarion of connecting the portable device

like mobile phone or laptop to internet using wireless ie wifi connection available in the

school. After connectivity transfer of data can be shown.

Student Activity:

Ask the students to write a message on a piece of paper and that paper is passed

from one student to another student in the class. Let the student who writes the

message to be the sender and the student who receives the message be the

receiver. Let each student be a computer on this network. The students can be

made to stand in the formations shown below: Each circle represents a student.

Ask the students to count the number of students through whom the message

passed on its way from sender to receiver. The students can find one or more

alternative ways to pass the message.

12

Students can find the shortest route to send the message

Same process can be repeated for all formations




students for self assessment of the assignments and makes comments for improvement


Assessment of Class Performance

Rubrics for the unit

Expected

Learning

Outcomes

Indicators of Students Performance

Beginning Developing Achieved Exemplary

The student will

be able to:

The student

will be able to:

The student

will be able to:

The student

will be able to:

What is

Communication

Understand the

meaning of

communication

Understand

that computers

also

communicate

Visualize the

importance of

communication

in computers

Understand the

term network

and

networking

topologies

How are

computers

connected

Understand that

network is

required for

computers to

communicate

Understand

that cables are

required for

networks

Identify wired

and wireless

networks

Understand

that internet is

a network of

networks

Computers on

the move

Understand that

communication

can happen

without wires

Understand

different

modes of

wireless

communication

Identify

wireless means

of

communication

Explain the

various ways

with which

wireless

communication

can take place

13

Teachers Resource Material

Material Required:

1. Computer

2. Projector

Vocabulary to be taught (related to the theme):

1. Communication

2. Network

3. Communication medium

4. Guided/ Wired medium

5. Unguided/ Wireless medium

Websites for Reference:

www.en.wikipedia.org/wiki/Computer_network

www.compnetworking.about.com Computing Wireless / Networking

www.youtube.com

Answers

Student Worksheet-1:

1. a. Network

b. Communication

c. MAN

d. LAN

e. Guided medium

f. Unguided medium

g. WAN

2. All of the above.

3. Three ways in which computer network help you to communicate with your

friends.

Email, Chat and Video Conferencing

14

Answers Student Worksheet 2:

1. In the table given below identify whether wired or wireless transmission takes

place:

S. No. Application Type of Transmission

1. Desktop Computers in Offices Wired

2. A laptop used in a school Wireless

3. Networks in older unwired buildings Wireless

4. Transfer of song from one mobile to another

using wi fi

Wireless

2.

Wireless Communication Wired Communication

Communication between computers in

a network when they are connected

through wires like twisted pair, fiber

optic or coaxial.

Communication between computers in

a network when they are not

connected through wires but through

some other medium like radio waves,

infra red, Bluetooth etc..

Answers Student Worksheet 3:

1. LAN or Local Area Network can be used to connect computers and other devices

in a relatively small space.

2. Bank can link its branches situated in various parts of the same city through a

WAN or Wide Area Network

3. The most suitable cable layout of connections between the Wings can be fiber

optic cables.

4. Student can present information in the form of collage, presentation or charts.

15

Study Material

I MATRIX

CONTENT

a. What is Communication

b. How are computers connected

c. Computers on the move


Students will be able to know

The importance of communication.

The role of computers as a faster mean of communication between people.

Understand that either a wired or wireless connectivity is required between

computers to form a network

Know about the different types of wired and wireless connectivity.

The importance of communication.

The role of computers as a faster mean of communication between people.

II SCOPE

The students must be able to understand the importance and ways of computer

communication and how it is making us use portable devices with data sharing,

instant messaging or emailing facilities and thus indirectly enhancing their

cognitive skills.

III CONTENT

(a) What is Communication

Communication

In our day to day life, we all communicate to share our ideas and thoughts.

Similarly when computers want to share some information they also need

to communicate. To enable computers to communicate with each other they

need to connected with each other.

16

Network

When two or more computers are connected with each other they form a network.

Advantages of a network

When Computers are connected together in a network they allow

Sharing of resources such as printers.

Sharing of files or information.

Communication (Email, Chat).

Playing network games.

Types of networks

Local Area Network (LAN)

Metropolitan Area Network (MAN)

Wide Area Network (WAN)

LAN- Local Area Network

A Local Area Network (LAN) is a network

that is spread within a small area. It is

generally limited to a small area such as a

lab, school, or office building.

MAN-Metropolitan Area Network

A Metropolitan Area Network (MAN) is a network spanning an area larger

than a LAN but smaller than a WAN, such as a network across a city.

WAN - Wide Area Network

A Wide Area Network (WAN) is a

network that is spread across the

countries. E.g. Internet.

A Wide area network is formed by

connecting various LANs together.

17

(B) How are computers connected?

How can computers be connected to each other

The computers on a network may be linked through various mediums.

1. Guided Connectivity (Wired connectivity)

Cables

2. Unguided Connectivity (Wireless Connectivity)

Telephone lines

Radio waves

Satellites

Infrared light beams.

Laser beams

Blue tooth

What is Network Cable?

Cable is the wire or medium through which information moves from one

computer or device to another. There are many types of cable which are

commonly used with LANs. The following sections discuss the types of

cables used in networks and other related topics.

Twisted Pair Cable

Coaxial Cable

Fiber Optic Cable

(C) Computers on a move

Wireless Connectivity

These days more and more networks are operating without cables. This type of

connectivity is called wireless Connectivity. Different mechanisms used for

wireless data transmission are high frequency radio waves, infrared light beams,

or laser beams. Each computer on the wireless network has some sort of antenna to

send and receive data signals. For longer distance, wireless data transmission takes

place through cellular telephone network, microwave transmission, or through

satellite. Wireless networks are great for allowing laptop computers, portable

18

devices, or remote computers to connect to the LAN. Wireless networks are also

beneficial in older buildings where it may be difficult or impossible to install

cables.

Advantages of wireless networks:

Connectivity for portable devices like laptops and mobile phones

Easy to install

Cost effective

Easy to expand

Disadvantages of wireless networks:

Less Secure from unauthorized users

Interference due to other electric devices or weather

IV STUDENTS WORKSHEETS:

Student Worksheet 1

1. Write one word answers for the following using given clue words:

Clue Words:- Guided medium, WAN, LAN, Network, MAN, Unguided

medium, Communication,

a. Interconnection between the computers. _________________________

b. Sharing of ideas and thoughts. _________________________

c. A network spread across a city. _________________________

d. A small network within a computer lab. _________________________

19

e. Wired transmission medium. _________________________

f. Wireless transmission medium. _________________________

g. A world wide network of computers. _________________________

2. A computer network (Select the most appropriate option)

a. Is collection of hardware components and computer interconnected via

communication channel.

b. Allows sharing of data.

c. Allows sharing of information.

d. All of the above.

3. Write three ways in which computer network help you to communicate

with your friends.

___________________________________________________________________

___________________________________________________________________

___________________________________________________________________

Student Worksheet 2:

1. In the table given below identify whether wired or wireless transmission

takes place:

S No. Application Type of Transmission

1. Desktop Computers in Offices

2. A laptop used in a school

3. Networks in older unwired buildings

4. Transfer of song from one mobile to

another using wi fi

2. Look at the figures given below and identify wired and wireless

communication. Also differentiate between the two.

20

_______________________________

_______________________________

_______________________________

_______________________________

______________________________

______________________________

______________________________

______________________________

Student Worksheet 3:

1. Name a network to connect computers and other devices in a relatively

small space.

2. A bank is planning to link its branches situated in various parts of the same

city which type of network will be formed?

3. Alkatel has set up its new Branch for its office and web based activities. It

has 4 wings of buildings as shown in the diagram:

Suggest the most suitable cable layout of connections between the Wings.

Wing

X

Wing

Y

Wing

Z

Wing

U

21

4. Tell the students to find information about networking (wireless and wired

both) and they also have to present in the class how networking has

revolutionized communication.

V GLOSSARY

1. Communication

Ability to share ideas and thoughts.

2. Network

Group of computers connected with each other.

3. Communication medium

Mode of connectivity between computers on a network.

4. Guided/ Wired medium

When computers in a network are connected through wires. The wires

used are called guided or wired medium.

5. Unguided/ Wireless medium

When computers in a network are connected without wires then the

medium used is called unguided or wireless medium.

VI WEBSITES

www.en.wikipedia.org/wiki/Computer_network

www.compnetworking.about.com Computing Wireless / Networking

www.youtube.com


CENTRAL BOARD OF SECONDARY EDUCATION

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Unit-2- Connect With Others