IB Mathematics Applications & Interpretation (AI) HL Internal Assessment Example

The student's investigation has a clear overall purpose and the reader can usually follow the route from the personal context to the mathematical comparison.

The student includes a sensible structure with sections, figures, tables, and a conclusion, which makes the work easy to navigate.

Most of the material stays relevant to the modelling question and supports the main line of inquiry.

Some sections are longer than necessary and reduce concision.

The link between the derived series work and the later fitted model is not fully coherent.

A few graphs and explanations add little to the main argument or are not well matched to the physical situation.

The student uses relevant mathematical notation such as variables, derivatives, powers, summation-style expressions, regression output, and percentage error.

The student includes multiple representations, including symbolic work, tables, graphs, and model comparisons.

The mathematical writing is often readable, and the equations are usually set out clearly enough for the reader to follow.

Some notation is inconsistent, especially around angle units and the meaning of symbols.

Several terms are used imprecisely, such as describing a fitted curve as the true motion or using convergence language incorrectly.

Some graphs and labels are difficult to interpret, which limits clarity.