Mr Choi believes students learn Science best when they understand why something happens, not when they simply memorise formulas and model answers. Trained in molecular biology and biomedical engineering, with years of experience in forensic science, he brings a scientist’s way of thinking into every lesson — breaking difficult ideas into clear steps, connecting concepts to real situations, and showing students how to apply what they know in examinations. His goal is simple: help students understand Science deeply, think with confidence, and answer with precision.