JSS 3 First Term

LEARNING OBJECTIVES: BY THE END OF THE LESSON PUPILS SHOULD BE ABLE TO:

Cognitive	i. Describe the network interface card and the MAC address. ii. Compare a hub, a switch and a router. iii. State the role of the main internet protocols. iv. Trace how a typed web address becomes a displayed page.
Affective	i. Appreciate the value of Network Devices and Protocols in school, at home and in the community. ii. Show willingness to use digital tools carefully, safely and responsibly.
Psychomotor	i. Write one sentence on what each of the NIC, hub, switch, router and modem does. ii. Draw a table comparing HTTP and HTTPS. iii. List the steps a browser takes to load a named website. iv. Explain, using an example, why a switch is better than a hub.

Rationale: A Network Interface Card, or NIC, is a hardware component, either built into the motherboard or inserted as an expansion card, that allows a device to connect to a network. Understanding starter Scenario, network Devices in Depth, network Protocols, tCP/IP helps learners use digital technology confidently, safely and responsibly.

Pre-requisite Knowledge: In Week 3, learners studied Computer Networks, including types of Networks in Detail, network Devices, how Data Travels Across a Network. The knowledge from that week is used again in this lesson.

Learning Material/Teaching Aid: Whiteboard, markers, computer or laptop where available, printed notes and charts on Network Devices and Protocols, practical task sheets, learners' notebooks and pens.

Reference Materials: Digital Technology for Junior Secondary Schools (JSS 3); NERDC Digital Technology Curriculum; Digital Technology JSS 3 First Term Notes (Week 4); First Term examination and Continuous Assessment question papers.

LESSON DEVELOPMENT

Stage/Step (Time)	Teacher's Activities	Student's Activities	Learning Points
Introduction 5 MINUTES	Welcomes learners, revises Week 3 (Computer Networks) with two quick oral questions, and asks what they already know about Network Devices and Protocols. Elicits responses and writes the topic on the board.	Recall the previous lesson and share what they already know about Network Devices and Protocols.	Connecting prior knowledge to Network Devices and Protocols.
Step 1 6 MINUTES	Covers Starter Scenario: The ICT teacher brings a small circuit board to class and says, 'Without this tiny card inside every computer, no computer could join a network, no matter how many cables or routers you have.' The card is a Network Interface Card, or NIC. Covers Network Devices in Depth: A Network Interface Card, or NIC, is a hardware component, either built into the motherboard or inserted as an expansion card, that allows a device to connect to a network. Covers Network Protocols: Two students in the same classroom speak different languages.	Listen, take notes and answer oral questions on "Starter Scenario" and related points.	Understanding: Starter Scenario; Network Devices in Depth; Network Protocols.
Step 2 6 MINUTES	Covers TCP/IP: TCP/IP stands for Transmission Control Protocol and Internet Protocol. It is the set of core protocols that makes the internet work. Covers HTTP and HTTPS: HTTP, which stands for HyperText Transfer Protocol, is the protocol used by web browsers to request and receive web pages from web servers. When you type a URL and press Enter, your browser sends an HTTP request to the server, which responds with the web page.	Copy the key points, give examples from school and everyday life, and ask questions on "TCP/IP" and related points.	Understanding: TCP/IP; HTTP and HTTPS.
Step 3 6 MINUTES	Covers DNS and Putting It All Together: DNS stands for Domain Name System. When you type a domain name into your browser, your browser first checks its own cache to see if it already knows the IP address for that domain. Covers The Digital Economy: Old Ways versus New Ways: Before the internet, buying and selling happened mostly in physical markets, shops and offices with cash payments, printed receipts and paper records. The digital economy changed this by letting people buy, sell and transact through computers and phones connected to networks.	Discuss in pairs, then report one point on "DNS and Putting It All Together" and related points to the class.	Understanding: DNS and Putting It All Together; The Digital Economy: Old Ways versus New Ways.
Step 4 6 MINUTES	Covers Digital Literacy and Responsible Digital Citizenship: Digital literacy is the ability to find, evaluate, create and communicate information using digital tools. It includes searching the web effectively, judging whether a source is trustworthy and protecting personal information. Covers Intellectual Property, Copyright and Respecting Creative Work Online: Intellectual property is a creation of the mind with value, such as a song, a film, a book, a photograph or a software program. Copyright is the legal protection that gives the creator control over how their work is copied and shared.	Respond to questions, complete the examples on the board and note down "Digital Literacy and Responsible Digital Citizenship" and related points.	Understanding: Digital Literacy and Responsible Digital Citizenship; Intellectual Property, Copyright and Respecting Creative Work Online.
Practical Work 6 MINUTES	Guides learners through the practical work: (i) Write one sentence on what each of the NIC, hub, switch, router and modem does. (ii) Draw a table comparing HTTP and HTTPS. (iii) List the steps a browser takes to load a named website. Moves round the class to check progress and correct unsafe or careless use.	Carry out the practical tasks individually or in pairs and record what they did in their notebooks.	Applying the lesson through hands-on practice.
Evaluation 3 MINUTES	Asks learners to: i. Describe the network interface card and the MAC address. ii. Compare a hub, a switch and a router. iii. State the role of the main internet protocols. iv. Trace how a typed web address becomes a displayed page.	Respond verbally and in writing to the evaluation questions.	Assessment and consolidation of the lesson content.
Conclusion 2 MINUTES	Recaps the main points: starter Scenario, network Devices in Depth, network Protocols, tCP/IP, hTTP and HTTPS. Links them to the assignment and previews Week 5: Number Systems.	Listen, ask questions and copy the assignment.	Reinforcement of key concepts and a preview of the next lesson.

Assignment: i. Two computers built by different companies and running different software must exchange data, and a user types www.schoolname.ng into a browser. Define a protocol, explain what TCP and IP each do, name the other protocols in the notes with their jobs, and explain what DNS and the MAC address do. ii. A school buys a new desktop computer. The ICT teacher says it cannot join the network without a NIC. What is a NIC, where is it located inside the computer, and what does it do?