IB Biology HL Internal Assessment Example

The student states a focused research question and places it in a clear biological context.

The student identifies several relevant controls and practical considerations, including replication, temperature measurement, and safety.

The student's method is detailed enough that another student could broadly follow the investigation.

The key term the student is investigating is not defined precisely enough to be measured consistently.

Some of the scientific background is oversimplified or not tightly linked to what the student's method can actually show.

A few important variables, especially sample mass, heating rate, and the endpoint definition, are not controlled clearly enough for reliable replication.

The student presents raw results, summaries, and a statistical test, so the main pattern in the data can be followed.

The student calculates means and standard deviations, which shows that they are trying to quantify variation as well as central tendency.

The student's tables give a usable overview of the relationship between ripeness and the recorded temperature change.

Some of the reporting is not consistently clear or precise, especially in the way units and uncertainty are written.

The uncertainty treatment is not always mathematically or physically matched to the temperature data.

The processing is relevant, but it does not fully analyse the whole relationship across all ripeness levels, and some of the supporting compositional evidence is limited.