Exemplars

May 2025
New Syllabus
6
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Examiner's summary

Criterion A [5/6]:

The student clearly states the independent and dependent variables in the research question, with a standardized method for determining the effect of earthworms on plant growth. However, the background theory section could be more detailed and include descriptions of the plant species. Additionally, the explanation of the choice of techniques used for measuring the variables could be enhanced by providing relevant studies/references. The methodology is well described, with a clear explanation of the choice of sampling technique applied and a thorough discussion regarding the student’s choice of aspects such as a number of trials and precision of measurements. The student also effectively addresses safety, ethical, and environmental issues associated with the investigation. Overall, the methodology is sufficiently described and free from irrelevant or repetitive information, allowing for the investigation to be reproduced.

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Criterion B [5/6]:

The student clearly describes how the data was obtained and processed, ensuring that each procedural step is easily understood. The description of data recording and processing is detailed and precise, with appropriate annotation of tables, graphs, and figures. However, the student needs to consider the impact of uncertainties on the data and results more explicitly, providing a thorough explanation of error bars and their implications. Overall, there are no major inaccuracies that hinder the validity of the conclusion, and the student conducts relevant data processing to accurately address the research question by presenting both qualitative and quantitative raw data and providing a separate section for processing the data.

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Criterion C [0/0]:

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Criterion D [0/0]:

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Other requirements [0/0]:

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