Lesson Plan

• Describe the four main operating‑system interface types (CLI, GUI, dialogue‑based, gesture‑based) and their key characteristics.
• Compare at least two advantages and two disadvantages of each interface.
• Analyse which interface is most appropriate for a given device or task.
• Demonstrate a basic CLI command and a simple GUI navigation task.
• Evaluate how modern operating systems combine multiple interfaces.

• Projector or interactive whiteboard
• Computer lab with Windows, macOS, and Linux machines
• Sample CLI terminal (e.g., Command Prompt) and GUI screenshots
• Handout containing the comparison table
• Short video demonstrating gesture‑based interaction
• Worksheets for group analysis activity

Start with a quick poll: “Do you usually type commands or click icons to get things done?” Review that an operating system bridges hardware and users. Explain that today’s focus is on four interface types and the criteria for choosing the most suitable one.

1. Do‑now (5'): Students list the interfaces they have used in daily life.
2. Mini‑lecture (10'): Overview of OS roles and the four interface categories with slide visuals.
3. Live demonstration (15'): Show a simple CLI command (e.g., dir) and navigate a folder using a GUI.
4. Group activity (15'): Using the handout, groups compare interfaces for a given device scenario and justify their choice.
5. Video showcase (10'): Watch a short clip of gesture‑based interaction; discuss strengths and limitations.
6. Quick quiz (5'): Kahoot/exit‑ticket questions to check understanding of key concepts.

Recap the four interface types, highlighting their main strengths and weaknesses. Have each student write one real‑world scenario where a particular interface is optimal as an exit ticket. For homework, ask learners to research a device that uses a gesture‑based interface and prepare a brief description.