Assess students' ability to read and interpret epidemic curves and the basic reproduction number (R0). Tasks include identifying outbreak phases (exponential growth, peak, decline), estimating growth rate or doubling time from simple data/plots, explaining what R0 represents and how it relates to transmission, and predicting or evaluating how public‑health interventions (social distancing, isolation, vaccination, contact tracing) change the curve shape and effective reproduction number. Suitable for Grade 9–12; requires basic calculations, data interpretation, and conceptual explanation.