Lesson Plan

• Describe the purpose of common networking devices (hub, switch, bridge, router, gateway, modem, access point, firewall).
• Explain how each device contributes to network performance, security, scalability, and resource sharing.
• Compare the OSI layers and key benefits of these devices.
• Apply knowledge to evaluate which devices are appropriate for a given network scenario.

• Projector or interactive whiteboard
• Slide deck on networking devices
• Handout with device comparison table
• Physical device icons or mini‑models (optional)
• Whiteboard and markers
• Student worksheets for scenario analysis

Begin with a quick poll: “What device lets you connect multiple computers to the internet?” Connect responses to prior knowledge of basic cabling and introduce today’s focus on the purpose and benefits of networking devices. Explain that by the end of the lesson students will be able to identify each device, its OSI layer, and why it matters for performance, security, and scalability.

1. Do‑now (5'): Students list any networking devices they have seen at home or school.
2. Mini‑lecture (15'): Overview of each device with slide visuals and OSI‑layer mapping.
3. Guided comparison (10'): Walk through the comparison table, highlighting key benefits and real‑world examples.
4. Group activity (15'): In small groups, students receive a network‑scenario worksheet and decide which devices to include, justifying their choices.
5. Whole‑class debrief (10'): Groups share solutions; teacher checks understanding with quick concept questions.
6. Exit ticket (5'): Students write one benefit of a device of their choice and its OSI layer.

Summarise how each device supports performance, security, reliability, and scalability in modern networks. Collect exit tickets as a rapid retrieval check. For homework, assign a short research task to find a real‑world example of a network that uses at least three of the devices discussed.