The student clearly states the independent and dependent variables in the research question, including their values and units. Additionally, the student describes the method of analysis conducted, specifically mentioning the measurement of electrical conductivity using resistance across the pencil's ends. The document includes a background theory section that directly relates to the research question, providing relevant concepts and theories. However, the explanation of the choice of techniques used for measuring the independent and dependent variables lacks clarity and justification. The methodology is sufficiently described, allowing for the investigation to be reproduced, and there is no irrelevant or repetitive information included. The student also addresses safety, ethical, and environmental issues associated with the investigation.
