Leson Plan: Cloud Computing and Virtualization SS3

LESSON PLAN: CLOUD COMPUTING AND VIRTUALIZATION

Subject	Digital Technologies
Class	SSS 3
Term	First Term
Week	8
Topic	Cloud Computing and Virtualization
Duration	80 Minutes (Double Period)
Subtopics	Meaning of virtualization, virtual machines, hypervisors, cloud computing, remote servers, cloud service models, benefits and limitations.

1. BEHAVIOURAL OBJECTIVES

By the end of the lesson, students should be able to:

1. Define virtualization and cloud computing.
2. Explain virtual machines and state the functions of a hypervisor.
3. Describe remote servers and identify their uses.
4. Differentiate between virtualization and cloud computing.
5. Identify and explain IaaS, PaaS and SaaS.
6. State the benefits and limitations of cloud computing and virtualization.

2. INSTRUCTIONAL / TEACHING AIDS

• Computer system or laptop.
• Projector or display screen, where available.
• Internet connection, where available.
• Charts or diagrams showing a physical server, virtual machines and cloud services.
• Whiteboard and markers.
• Examples of cloud services, such as Google Drive and online document editors.

3. PREVIOUS KNOWLEDGE / ENTRY BEHAVIOUR

Students have learned about computer systems, operating systems, computer networks and internet services. They may have used online storage, web-based email or shared online documents.

Entry questions:

1. What is an operating system?
2. What happens when you save a file to an online storage service?
3. Can one physical computer run more than one operating system? Explain your answer.

4. PRESENTATION STEPS

STEP	TEACHER'S ACTIVITY	STUDENTS' ACTIVITY
Step 1: Introduction 10 minutes	Reviews previous lessons on operating systems and networking. Asks students how they access files stored online. Introduces cloud computing and virtualization.	Respond to questions and mention examples of online services they know.
Step 2: Virtualization 15 minutes	Defines virtualization, explains virtual machines and describes the roles of physical hardware, guest operating systems and hypervisors. Explains Type 1 and Type 2 hypervisors.	Take notes, identify the components of a virtual machine and give examples of how virtualization can be used.
Step 3: Cloud Computing 15 minutes	Explains cloud computing and discusses examples such as online storage, web-based email and online document editors.	Identify cloud services they have used or heard about and explain their purposes.
Step 4: Remote Servers 10 minutes	Explains remote servers and how requests travel from users' devices to servers and back. Discusses website hosting, file storage and email services.	Describe how a remote server responds when a user requests an online file or webpage.
Step 5: Service Models 10 minutes	Explains IaaS, PaaS and SaaS, using appropriate examples. Highlights the relationship and differences between virtualization and cloud computing.	Differentiate between the three service models and explain how virtualization can support cloud services.
Step 6: Benefits and Limitations 10 minutes	Discusses accessibility, scalability, collaboration, hardware efficiency, internet dependence, security risks and service interruptions.	List benefits and limitations and suggest ways to protect data stored online.
Step 7: Evaluation and Conclusion 10 minutes	Asks oral and written questions, corrects misconceptions and summarises the main points of the lesson.	Answer evaluation questions, participate in the discussion and write down the assignment.

5. EVALUATION QUESTIONS

1. What is virtualization?
2. Define a virtual machine and state three of its components.
3. What is a hypervisor?
4. Explain cloud computing and give three examples of cloud services.
5. What is a remote server? State two uses.
6. Differentiate between virtualization and cloud computing.
7. Explain IaaS, PaaS and SaaS.
8. State three benefits and three limitations of cloud computing.

6. ASSIGNMENT

1. Explain the difference between a physical computer and a virtual machine.
2. Write short notes on IaaS, PaaS and SaaS, giving one example of each.
3. State four precautions users should take when storing information in the cloud.
4. Explain two reasons a school might use virtualization in its computer laboratory.

7. TEACHER'S REFLECTION

After the lesson, the teacher should reflect on the following:

• Were students able to explain cloud computing and virtualization correctly?
• Could students distinguish between a virtual machine and a remote server?
• Did students understand the differences between IaaS, PaaS and SaaS?
• Which concepts require further explanation or practical demonstration?
• What improvements should be made in the next lesson?

CMPNOTE — Digital Technologies Lesson Plan

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