Grade 9 Computer Science & Entrepreneurship (2025)

Grade 9 Computer Science & Entrepreneurship

This course follows the Grade 9 Computer Science notes and is organized unit by unit for focused study, revision, and assessment.

Unit 1: Introduction to Computational Systems

Systems and software, the Von Neumann computer model, number systems and conversions, data representation, binary arithmetic, text encoding, file storage, and memory units.

Unit 2: System Design and Troubleshooting

Analog and digital signals, ADC and DAC, Boolean algebra and functions, logic gates and diagrams, systematic troubleshooting, hardware diagnosis, upgrades, security, and software maintenance.

Unit 3: Computer Networks

Network systems and communication, networking devices and topologies, transmission modes, the OSI model, IPv4 and IPv6, protocols, network security, network types, and real-world applications.

Unit 4: Computational Thinking

Computational thinking techniques and principles, flowcharts, pseudocode, algorithm evaluation, dry runs, simulation, LARP, error types, and debugging.

Unit 5: Web Development with HTML, CSS, and JavaScript

Web-development foundations, front-end and back-end roles, HTML structure and content, lists and tables, CSS styling and layouts, JavaScript variables and functions, responsive design, and practical coding exercises.

How to complete each unit

• Study each topic lesson in sequence.
• Review the short questions, examples, tables, and activities.
• Complete the unit quiz.
• A score of at least 80% is required to pass each quiz.