Overall Score: 19/24
IB Grade: 6
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Criteria A: Research Design
4/6
0
3
6
Criteria Strands
Excellent
Research question context
Good
Methodological considerations for collecting data
Moderate
Methodological considerations
Criteria Feedback
- Introduction situates the research question within a clear IB mechanics context, linking to work–energy and friction theory.
- Hypothesis clearly articulates the predicted inverse relationship, demonstrating alignment between theory and experimental design.
- Procedural description (mass range, trial count, control variables) is detailed, allowing reproducibility with few clarifications needed.
- Assumptions about energy losses (heat, sound) are stated but unquantified, weakening methodological rigor.
- Key values for spring constant and compression distance are omitted, reducing reproducibility.
- Transition between friction theory and kinetic energy relations lacks depth; variable definitions are inconsistent.
Criteria B: Data Analysis
4/6
0
3
6
Criteria Strands
Excellent
Communication of data recording and processing
Moderate
Consideration of uncertainties
Excellent
Data processing quality
Criteria Feedback
- Raw-data tables include clear units and measurement uncertainties, supporting precise data recording.
- Graphs are well labeled, include error bars and trend lines, and effectively communicate the data’s precision and trend.
- Data processing (averages, inverse‐mass transformation, linear regression) is carried out accurately and appropriately.
- Propagation of uncertainty for averaged distances and mass uncertainties is omitted, representing a significant gap.
- Intermediate algebraic steps are not fully shown, which reduces clarity in derivations.
- Initial discussion of gradient/intercept omits uncertainty values, weakening the interpretation at that stage.
Criteria C: Conclusion
5/6
0
3
6
Criteria Strands
Good
Conclusion relevance and support
Excellent
Scientific context comparison
Criteria Feedback
- Conclusion effectively links experimental findings back to theoretical friction and energy equations.
- Comparison to accepted scientific context is coherent and justified, reinforcing the IB‐level relevance of the results.
- Quantitative discussion of the nonzero intercept is limited and could be expanded to deepen the analysis.
Criteria D: Evaluation
6/6
0
3
6
Criteria Strands
Excellent
Methodological weaknesses
Excellent
Suggested improvements
Criteria Feedback
- Methodological weaknesses are explained in terms of their direct impact on data reliability and consistency.
- Suggested improvements are realistic, relevant, and accompanied by clear explanations of how they would enhance the investigation.
- The impact of ignored energy losses (heat, sound) is acknowledged but not quantitatively estimated, which would strengthen the evaluation.