The student demonstrates consistent and correct use of mathematical notation, symbols, and terminology throughout the assessment. They effectively define and explain key terms and variables when first introduced, such as the total population size. However, the introduction lacks a clear explanation of epidemiological models, which is essential for understanding the main concepts. The student appropriately uses multiple forms of mathematical representation and explains all mathematical calculations and data presentations. Additionally, they employ deductive methods and logical proofs where appropriate. However, there is a need for improvement in labeling graphs, tables, and diagrams as they should be titled, numbered, and placed at the bottom.