The student uses correct mathematical notation, symbols, and terminology consistently throughout the internal assessment, exemplified by the accurate definitions of the quadratic model and the proper use of equations in the exponential and logistic decay models. However, key terms and variables, such as "quadratic model," "exponential model," and "logistic model," are not defined when first introduced, which could enhance clarity. The student effectively describes the main concepts in the introduction and incorporates multiple forms of mathematical representation, including well-structured tables and illustrative graphs. While results are rounded only at the end of calculations, the degree of accuracy for rounded values is not specified, and the student should provide logical proofs and explanations for each step in deriving the models to strengthen the overall argument.
