Cloud Computing II - SSS 2 Plan

Subject	Digital Technologies
Class	SSS 2
Term	Third Term
Week	3
Topic	Cloud Computing II
Duration	80 Minutes (Double Period)
Date	________________________

Behavioural Objectives

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

1. Explain Software as a Service (SaaS).
2. Explain Platform as a Service (PaaS).
3. Explain Infrastructure as a Service (IaaS).
4. Identify examples of SaaS, PaaS and IaaS.
5. State the uses of the three cloud service models.
6. Differentiate between SaaS, PaaS and IaaS.

Instructional Materials / Teaching Aids

• Computer system or smartphone
• Internet connection, where available
• Whiteboard and marker
• Charts showing SaaS, PaaS and IaaS
• Examples or screenshots of cloud-based applications
• Projector, where available

Previous Knowledge

Students have previously studied cloud computing and understand that it allows users to access computing resources and services through the internet.

Teaching Methods

• Discussion method
• Explanation and demonstration
• Question-and-answer method
• Guided classification activity

Presentation Steps

Step	Teacher's Activities	Students' Activities	Time
Introduction	Reviews the previous lesson on cloud computing and asks students to mention cloud-based services they know. Introduces the three cloud service models.	Recall previous knowledge and identify familiar online services.	10 mins
Step 1: SaaS	Explains Software as a Service, gives examples such as Google Docs and Canva, and discusses its uses.	Define SaaS, identify examples and state its uses.	12 mins
Step 2: PaaS	Explains Platform as a Service and describes how developers use platforms such as Google App Engine and Azure App Service to build and deploy applications.	Explain PaaS and identify its examples and uses.	12 mins
Step 3: IaaS	Explains Infrastructure as a Service and describes virtual machines, storage and networking resources.	Define IaaS and state examples and practical uses.	12 mins
Step 4: Comparison	Compares the three models by meaning, examples, uses and level of user control. Uses a comparison table to reinforce the differences.	Complete a comparison table and explain the differences among the models.	12 mins
Step 5: Class Activity	Provides examples of cloud services and guides students in classifying them under SaaS, PaaS or IaaS.	Classify the services, explain their uses and justify their answers.	12 mins
Evaluation and Conclusion	Asks oral questions, corrects misunderstandings and summarises the lesson.	Answer questions and summarise the differences between the three service models.	10 mins
Total			80 mins

Evaluation Questions

1. What is Software as a Service (SaaS)?
2. Explain Platform as a Service (PaaS).
3. What is Infrastructure as a Service (IaaS)?
4. Give two examples of each cloud service model.
5. State two uses of SaaS.
6. Differentiate between PaaS and IaaS.

Assignment

Draw a table comparing SaaS, PaaS and IaaS. For each model, provide its full meaning, definition, two examples and two uses.

Reference

SSS 2 Digital Technologies lesson note: Cloud Computing II — Week 3, Third Term (CMPNOTE).