WARMUP: NETWORK PUZZLE
30 MINA network is like a spider web of connections. Let's solve a puzzle about how data travels!
1
String Web Game
Stand in a circle and hold a ball of string. Pass it to someone — you've just made a network connection!
2
Discussion
What happens if one person drops the string? That's what a broken connection feels like.
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Data Roads
Data travels in small pieces called "packets". Each packet knows its destination like a letter with an address. Routers direct the traffic.
Key Parts of a Network:
- Router — directs data to the right device
- Modem — connects your home to the internet
- Firewall — blocks unwanted visitors
- Switch — connects devices in your home
Hidden Dangers of Public Wi-Fi
Free Wi-Fi at cafes or airports is convenient, but attackers can "sniff" the data you send — including passwords and messages.
Never do these on public Wi-Fi:
Online banking, logging into email, entering passwords.
Online banking, logging into email, entering passwords.
How to Stay Safe
DO
- Use your home Wi-Fi for private stuff
- Use mobile data (4G/5G) when out
- Ask the owner before connecting
DON'T
- Connect to unknown "free Wi-Fi" networks
- Enter passwords on public Wi-Fi
- Keep Wi-Fi on when not needed
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MINI CHALLENGE: RISK ZONE MAPPING
15 MINClick each zone to learn about its safety level.
Home Wi-Fi
SAFECafe / Library
CAUTIONAirport Open
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MAIN PROJECT: DESIGN A SAFE NETWORK
Draw a network diagram for a small office or home. Label each device, show connections, and mark firewalls.
Internet
Firewall
Router
Devices
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