This module focuses on interaction and behaviour in web‑based programs. You will explore how programs respond to user actions, how state is managed and updated, and how interaction leads to change over time. The emphasis is on reasoning about dynamic behaviour and understanding how interactive systems are structured computationally.

In this module, you turn your attention to scale. You will examine how programs grow in size and complexity, and how careful organisation, abstraction, and structure support clarity and manageability. The focus is on thinking computationally about larger systems and maintaining understanding as complexity increases.

In the final module, you bring together ideas from across the course by building and refining a more substantial software project. You will integrate interaction, structure, and behaviour, and reflect on how computational thinking supports the design, organisation, and communication of larger programs. The emphasis is on consolidation and reflection on learning.