The student has inconsistently used correct mathematical notation, symbols, and terminology, with some lapses in spelling and clarity that hinder full compliance with this criterion. Key terms and variables have not been adequately defined when first introduced, particularly in relation to Equation (2), which requires a clearer explanation of its context and the variables involved. While the introduction effectively describes the main concepts of the investigation, there is a lack of relevant analysis accompanying the included photograph, which detracts from the use of multiple forms of mathematical representation. Furthermore, the student has not provided sufficient explanations for mathematical calculations or stated the degree of accuracy for rounded values, although rounding has been applied correctly at the end of the calculation thread. Overall, while some aspects of the work meet the requirements, significant improvements are needed in clarity and explanation.