Overall Score: 9/24
IB Grade: 3
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General feedback
9/24
0
12
24
5.1·weakness
Page 2
The table of contents uses unconventional mathematical notation (e.g., overlines), which may confuse readers; simplify page numbering for clarity.
5.2·suggestion
Page 2
The “Contents” header is formatted inconsistently; consider standardizing fonts and styles to improve professionalism.
5.3·suggestion
Page 5
The equipment list contains nested indentations that impair readability; streamline entries for a clear, linear list.
5.4·suggestion
Page 12
Ensure the references section uses a consistent citation style (e.g., APA or MLA) and include DOIs or access dates uniformly.
Criteria A: Research Design
3/6
0
3
6
Criteria Strands
Moderate
Research question context
Moderate
Methodological considerations
Moderate
Methodology description
Criteria Feedback
- Title clearly states the independent and dependent variables, giving immediate clarity on focus
- Well-structured explanation of protein–tannin interactions and denaturation mechanisms
- Rationale for selected temperature range is justified by denaturation kinetics and evaporation considerations
- Comprehensive control of variables (tea type, steeping time, container) ensures consistency
- Iterative approach demonstrated through preliminary tests and parameter adjustments
- Research question phrased as a statement rather than a clear interrogative
- Background lacks specific justification for chosen temperatures and fat levels
- Method omits number of replicates, leading to reproducibility ambiguities
- Qualitative film assessment lacks objective criteria or measurement scale
Criteria B: Data Analysis
1/6
0
3
6
Criteria Strands
Poor
Communication of data recording and processing
Poor
Consideration of uncertainties
Poor
Data processing quality
Criteria Feedback
- Data recording includes temperatures, fat percentages and qualitative comments, indicating at least minimal data capture
- Results table is poorly formatted with unclear headings and units misaligned
- No graphical representation or organized qualitative scale was provided
- Limited discussion of measurement uncertainties or observer error
- Data processing remains purely narrative with no quantitative or statistical treatment
Criteria C: Conclusion
2/6
0
3
6
Criteria Strands
Poor
Conclusion relevance and consistency
Poor
Scientific context comparison
Criteria Feedback
- Conclusion directly addresses the research question by linking higher temperature and fat content to film formation
- Relevance to the question is clear and focused
- Conclusion is not fully supported by quantitative analysis or specific data thresholds
- Comparison to accepted scientific context remains superficial with no citation of quantitative studies
Criteria D: Evaluation
3/6
0
3
6
Criteria Strands
Moderate
Methodological weaknesses
Moderate
Improvements
Criteria Feedback
- Identifies specific methodological weaknesses (e.g., low tannin content, subjective observation) and links them to film stability
- Proposes realistic improvements (tea-to-milk ratio adjustments, vessel shape, stirring control) directly addressing limitations
- Evaluation demonstrates comprehensive consideration of additional variables like pH and mineral content
- Does not explain the relative impact or prioritise which weaknesses most affected outcomes
- Practical constraints of proposed improvements are not fully discussed
- Improvement rationales are described but lack deeper explanation or justification