How to answer IGCSE Practical Investigation Exam Questions using CORMMSS

This PowerPoint is a focused, exam-ready resource designed to help IGCSE students confidently answer CORMMSS / variables and experimental design questions. It begins with a clear explanation of independent, dependent, and control variables, followed by a structured breakdown of the CORMMSS framework and how it should be applied in exam answers. The resource then works through three exam-style questions, modelling how marks are awarded and highlighting common mistakes students make. It is ideal for high-ability students who understand the science but want to improve method, clarity, and consistency in longer practical and planning questions. Suitable for self-study, small group teaching, or revision ahead of assessments.