eBook
B 1.1.1 Problem specification
A problem specification is the formal definition of what a system must do before any design or coding begins. A well-constructed specification includes a problem statement, constraints and limitations,...
eBook
B 1.1.2 Computational thinking
Computational thinking is a structured approach to problem-solving. It draws on four interrelated concepts, decomposition, pattern recognition, abstraction, and algorithmic design, which are applied together,...
Assessment
Getting Started: Choosing Your Project Free
Choosing your IA topic is the most important decision you'll make. A good project is complex enough to be challenging for a DP Computer Science student. It must solve a real problem and store data permanently...
Teacher Resources (new)
B 3.2.3 Abstraction (HL Only)
This section explains abstraction in OOP, emphasising its significance in creating modular code. It covers the use of abstract classes to define common interfaces for subclasses. Last updated: 15/01/2026...
Teacher Resources (old)
Sample Papers
This section links to sample examination papers that can be used for unique assessments during the course. Last updated: 12 May 2026 You can find mock exams for the new curriculum here: Sample Papers...
Teacher Resources (new)
Sample Papers 2025
This section links to sample examination papers for the Computer Science, first examination 2027, that can be used for unique assessments during the course. Last updated: 12 May 2026 Paper 2 SL 26-5...
Start here
Choosing an IDE
An Integrated Development Environment (IDE) is a software application that provides comprehensive facilities for software development. Popular IDEs include Eclipse, NetBeans, IntelliJ IDEA, and Visual...
eBook
A 3.2.1 Database Schemas
Every database relies on a schema, a structure defining data organization and relationships. We'll explore conceptual, logical, and physical schemas, and how they abstractly define data structure at different...
Teacher Resources (new)
A 3.2.1 Database Schemas
Every database relies on a schema, a structure defining data organisation and relationships. We'll explore conceptual, logical, and physical schemas, and how they abstractly define data structure at different...
Review/revision
A4: Machine Learning - Exam Lab
This exam practice page is designed for the A4: Machine Learning unit of the new IB Computer Science syllabus (first assessment 2027). A4.1 Machine learning fundamentals eBook A4.2 Data preprocessing...