Lesson Plan

• Describe the key similarities and differences between Bluetooth and Wi‑Fi regarding purpose, range, speed, power consumption, and security.
• Compare the network topologies used by Bluetooth (piconet/scatternet) and Wi‑Fi (infrastructure/ad‑hoc).
• Analyse real‑world scenarios to decide which technology is more appropriate.
• Demonstrate pairing a Bluetooth device and connecting to Wi‑Fi, measuring performance differences.

• Projector or interactive whiteboard
• Laptop or tablet for each pair of students
• Bluetooth speaker or headphones
• Access to the school Wi‑Fi network
• Speed‑test website (e.g., fast.com) and sample files for Bluetooth transfer
• Wi‑Fi analyzer app on a mobile device
• Printed comparison worksheet

Begin with a quick poll: “Which devices in your pocket use Bluetooth or Wi‑Fi?” Connect this to prior lessons on wireless communication. Explain that by the end of the lesson students will be able to identify which technology best fits a given situation.

1. Do‑Now (5'): Students list devices they use that rely on Bluetooth or Wi‑Fi and share one example.
2. Mini‑lecture (10'): Teacher presents a comparison chart highlighting similarities and key differences.
3. Guided demonstration (10'): Pair a Bluetooth speaker with a smartphone and measure latency.
4. Hands‑on activity (15'): In pairs, connect laptops to Wi‑Fi, run a speed test, then transfer a file via Bluetooth between two laptops; record results.
5. Analysis discussion (10'): Groups compare data, discuss why speed, range, and power differ, and relate to network topologies.
6. Exit ticket (5'): Students write a short scenario, choose Bluetooth or Wi‑Fi, and justify their choice.

Recap the main points: purpose, speed, range, power use, and security of each technology. Collect the exit tickets to gauge understanding, and assign a homework task to create a one‑page infographic comparing Bluetooth and Wi‑Fi for a chosen real‑world application.