Activity 01
Model Building: Cup and String LAN
Provide cups and string for students to create a simple LAN model simulating local device connections. Groups test message passing within a 'room' boundary, then extend strings to mimic WAN challenges like delays. Discuss speed and reliability differences.
Differentiate between a Local Area Network (LAN) and a Wide Area Network (WAN).
Facilitation TipDuring Model Building, walk the room with a timer to ensure each pair connects cups in under two minutes, then test data transfer before moving on.
What to look forProvide students with two scenarios: 1) Connecting computers in a single classroom. 2) Connecting computers in offices located in different cities. Ask them to identify whether each scenario best represents a LAN or a WAN and briefly explain their reasoning.
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Activity 02
Network Design Challenge: Office LAN
Students sketch a LAN for a small office, labeling computers, switches, routers, and cables. They justify choices for speed and cost, then present to the class. Extend by proposing WAN links to a branch office.
Analyze the typical uses and characteristics of a LAN versus a WAN.
Facilitation TipFor the Network Design Challenge, provide colored pencils and a printed floor plan so students annotate devices and cables directly on the map.
What to look forPose the question: 'Imagine you are setting up a network for a new library. What type of network would you primarily use for the library's internal computers and printers, and why? What would you need to consider if the library wanted to connect to other libraries in the region?'
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Activity 03
Scenario Sort: LAN vs WAN Uses
Prepare cards with network scenarios like 'school printing' or 'bank ATMs nationwide.' Groups sort into LAN or WAN piles and explain reasoning. Follow with a class debate on edge cases.
Design a simple network configuration for a small office (LAN) and explain its components.
Facilitation TipIn Scenario Sort, assign roles: one student reads, one sorts, and one records reasons to keep everyone engaged.
What to look forDraw a simple diagram of a star network with a central switch and several computers. Ask students to label the diagram and identify it as either a LAN or a WAN component, explaining one key characteristic that supports their answer.
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Activity 04
Mapping School Networks
Students survey their school for LAN examples like Wi-Fi zones, then research WAN connections like internet service. Create a whole-class map highlighting differences in scale and components.
Differentiate between a Local Area Network (LAN) and a Wide Area Network (WAN).
Facilitation TipWhen Mapping School Networks, use sticky notes to mark devices and colored yarn to trace cables for visual clarity.
What to look forProvide students with two scenarios: 1) Connecting computers in a single classroom. 2) Connecting computers in offices located in different cities. Ask them to identify whether each scenario best represents a LAN or a WAN and briefly explain their reasoning.
UnderstandAnalyzeEvaluateRelationship SkillsSelf-Management
Generate Complete Lesson→A few notes on teaching this unit
Teachers approach this topic by building physical models first to ground abstract ideas in sensory experience. Research shows tactile models help students retain distinctions between LAN and WAN characteristics. Avoid long lectures on theory; instead, let misconceptions surface during hands-on work and address them in real time. Use guided questions to prompt reflection and peer teaching to reinforce understanding.
By the end of the activities, students will confidently explain how LANs and WANs differ in scale, speed, ownership, and use. They will use correct vocabulary to label network diagrams, justify choices in design tasks, and sort scenarios with clear reasoning.
Watch Out for These Misconceptions
During Model Building: Cup and String LAN, watch for students who assume all networks work the same regardless of size.
During Model Building, after students test data transfer, ask them to time how long it takes to send a message and compare it to how long they think it would take across the school. Use this gap to introduce latency and ownership.
During Network Design Challenge: Office LAN, watch for students who think WANs are just bigger LANs without considering public infrastructure.
During the design task, ask students to label which parts of their network they own versus which parts are leased or shared, then discuss why ownership affects speed and cost.
During Scenario Sort: LAN vs WAN Uses, watch for students who believe wireless means no cables at all.
During sorting, have students identify the role of cables in their hybrid models and explain why LANs still rely on them for reliability, using their own creations as evidence.
Methods used in this brief