The student consistently and correctly uses mathematical notation, symbols, and terminology throughout the Internal Assessment (IA). Key terms and variables are clearly defined and explained upon their first introduction, and the main concepts are effectively described in the introduction, focusing on modeling battery usage. Additional terms are defined in detail as needed, and multiple forms of mathematical representation, such as tables, graphs, and equations, are appropriately utilized to support the investigation. All mathematical calculations are well-explained, and the degree of accuracy is stated for rounded values, with results rounded only at the end of the calculation process. Additionally, all graphs, tables, and diagrams are properly labeled, enhancing the overall clarity of the IA.
