Lesson Plan

• Describe the key characteristics of the Internet, intranet and extranet.
• Explain differences in ownership, access control and security levels among the three networks.
• Identify typical technologies and common uses for each network type.
• Compare advantages and disadvantages to select the most appropriate network for a given scenario.

• Projector and screen
• Laptop with internet access
• Printed handouts of the comparison table
• Worksheets for group activity
• Whiteboard and markers
• Interactive whiteboard (optional)

Start with a quick poll: “What network are you using right now?” to activate prior knowledge. Briefly recap that students already know what the Internet is, then outline today’s success criteria – students will be able to differentiate the three networks and justify their use in real‑world contexts.

1. Do‑now (5'): Students list examples of websites or services they use daily.
2. Mini‑lecture (10'): Define Internet, intranet and extranet; highlight ownership, access and security.
3. Group comparison activity (15'): Using the handout, groups fill a Venn diagram comparing characteristics, technologies and uses.
4. Guided practice (10'): Teacher demonstrates how to read the provided comparison table and extracts key points.
5. Whole‑class discussion (5'): Groups share findings; teacher clarifies misconceptions.
6. Exit ticket (5'): Students write one situation where an extranet would be the best choice.

Recap the three network types, emphasizing their distinct purposes and security levels. Collect exit tickets to assess understanding, and assign a short homework: create a real‑world scenario and justify which network (Internet, intranet or extranet) should be used.