Introduction
One of the unique challenges of the IB program is that every subject requires its own Internal Assessment (IA). While the core skills of research, analysis, and communication stay the same, each subject has different expectations. What works for a History IA may not work for a Physics IA — and applying the wrong strategy can cost you marks.
The key to success is knowing how to adapt IA strategies by subject. This article will break down how IAs differ across sciences, humanities, and mathematics, and provide tailored approaches so you can meet examiner expectations in every subject.
Quick Start Checklist
To adapt your IA strategies across subjects:
- Identify whether the IA is data-driven, source-driven, or concept-driven.
- Tailor your research question to the subject’s unique criteria.
- Adjust the balance of background, methodology, and analysis accordingly.
- Focus on subject-specific evaluation techniques.
- Always cross-check your draft with the rubric for that subject.
Science IAs (Biology, Chemistry, Physics)
Science IAs are experimental and data-heavy. Examiners expect:
- Focused research questions: Variables must be clear and measurable.
- Concise background: Just enough theory to explain the experiment.
- Strong methodology: Emphasis on validity, reliability, and control of variables.
- Quantitative analysis: Graphs, statistical tests, and evaluation of errors.
- Reflection on limitations: Showing how design flaws affect conclusions.
Strategy Tip: Don’t waste words describing every step. Instead, explain why your design choices matter for accuracy.
