Science and Elementary Technology

Computer my Friend

A computer is a tool that is used in the daily life. This unit will help you to discover and identify the main parts of a computer, know their uses and take care while using it at school and at home. The essential questions to be answered after this unit are: 

 What are the main external parts of a computer we use at school and their uses? 

 How can I maintain my computer well and use it properly?

Activity 1

 1. Look at the pictures a, b, c and d.

 2. Open your computer and place it in front of you on your desk. 

3. Tell the names of the parts labeled; (1, 2, 3, 4, 5, 6, 7) shown in the pictures a, b, c and d.

                           What have you discovered from the pictures?

1. Screen/monitor 

2. Antenna 

 3. Keyboard  

4. Touch  Pad 

 5. Battery 

 6.  Charger/Adapter

7. Computer case

Activity 2

 1. Look at the pictures (a, b, c and d).

 2. Open your computer, place it in front of you on your desk. 

3. Explain the use of each part labeled (1, 2, 3, 4, 5, 6, 7) shown in the pictures below.

                   What have you discovered from the pictures?

 I have discovered that 

The uses of the external parts of a computer are the following:

 1. Screen/monitor: Used for reading text or display pictures from the computer. 

2. Antenna: They are two and they connect a computer to the internet. 

3. Keyboard: Part of a computer that helps us to write. 

4. Touch Pad: Part of a computer where pupils slide their fingers to choose or select information on the computer screen. 5. Battery: Part of a computer that stores electricity used by the computer. 

6. Charger/Adapter: A cable that connects a computer to the electricity source. 

7. Computer case: Part of a computer that covers the internal parts of a computer

1. Look at the pictures (a and b) 

2. Explain what the pupils are doing. 

3. Who is cleaning his computer properly? Why? 

 4. What else can you avoid in order to maintain your computer safe?

                       What have you discovered from the pictures?

 I have discovered that 

A computer must be maintained properly in the following ways:

 - Cleaning to remove dust

 - Covering it to avoid dust 

 - Putting off after use/shutting down 

- Putting in anti virus 

• Avoid pouring water on it or putting it in rain;

• Handling it with care to avoid falling down; 

• Avoid putting it in very hot areas;

 • Avoid putting it in a place which is not well ventilated.

Activity 4 

1. Look at the pictures a, b, c, and d 

2. Look carefully how those pupils are sited. Who is sited well? Why? 

3. Tell someone who is sited poorly in your class to sit well.

                        What have you discovered from the pictures?

I have discovered that

Someone using a computer must sit as follows:
• Sit on the chair upright;
 • Sit without bending the back while leaning on the chair/desk;
• Avoid getting your eyes closer to the computer when it is switched on
 • Avoid putting the computer on the laps while using it;
• Avoid sitting while bending right or left.

Activity 5
 1. Look at the pictures a and b.
2. Show a picture of pupils with dangers of poor sitting posture while using a computer.
3. Say other dangers of poor sitting posture while using a computer.

                        What have you discovered from the pictures?

I have discovered that 

Negative effects of poor sitting posture while using a computer are as follows:

 • Eye sickness 

• Back sickness (backache)

 • Bent backbone 

• Fatigue

End of Unit Assessment 3