Lesson Notes By Weeks and Term v4 - SHS 1
DATA COMMUNICATION AND NETWORK SYSTEMS
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DATA COMMUNICATION AND NETWORK SYSTEMS
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Subject: Computing
Class: SHS 1
Term: 1st Term
Week: 20
Grade code: 1.1.3.LI.3
Strand code: 1
Sub-strand code: 3
Content standard code: 1.1.3.CS.1
Indicator code: 1.1.3.LI.3
Theme: COMPUTER ARCHITECTURE AND ORGANISATION
Subtheme: DATA COMMUNICATION AND NETWORK SYSTEMS
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In our daily lives here in Ghana, we are constantly connected. We use WhatsApp to chat with family, watch videos on YouTube, check BECE results online, and use Mobile Money services. All these activities are possible because of computer networks that connect our devices to each other and to the internet. Understanding the different types of these networks is fundamental to understanding how our digital world works. This lesson will demystify the technology behind our connections by exploring the three main types of network systems based on their geographical size: LAN, MAN, and WAN.
Starter Activity (5 mins) Think-Pair-Share: In pairs, discuss this question: "How are the computers in our school's computer lab able to share the same printer and internet connection?" After 2 minutes, a few pairs will share their ideas with the class. This introduces the concept of connectivity and resource sharing. A. What is a Computer Network?
A computer network is a collection of two or more computers and other hardware devices (like printers, scanners, smartphones) that are interconnected to allow for the sharing of data and resources. Data Sharing: Sending files, emails, messages (e.g., sharing your assignment with a friend via Bluetooth or email). Resource Sharing: Multiple computers using a single printer, sharing an internet connection, or accessing a central file server.
Think of it like a road network in Ghana. The roads (cables or Wi-Fi signals) connect different towns and cities (computers), allowing people and goods (data) to move between them. B. Classifying Networks by Geographical Area
The most common way to classify networks is by the geographical area they cover. We will focus on the three main types: Local Area Network (LAN) Metropolitan Area Network (MAN) Wide Area Network (WAN)