IB Mathematics Analysis and Approaches (AA) SL Internal Assessment Example

Clear sectional division (Introduction, Aim & Approach, Results, Models, Conclusion) ensures logical flow

Headings, sub-headings, tables and figures placed close to discussion enhance readability

The clear title immediately conveys the focus of the investigation

Occasional repetition of theoretical background (law of large numbers) introduces minor superfluity

Some captions are terse and pagination is somewhat untidy

Domain restrictions (t ≥ 0) are not stated on each model graph

Algebraic steps are shown and connected by prose, allowing tracing of parameter determination and RMSE computation

Variables are defined and units supplied; multiple representations (tables, scatter plots, residual chart) are integrated with explanation

The rationale for choosing the square-root model is logical and well explained

Occasional notation slips (mixing mm/cm, misuse of log notation) and missing axis labels limit precision

Formatting glitches in tables (e.g. first-difference row) and pixelated images detract from clarity

Some derivations lack full justification (e.g. logarithm removal)