One of the most frustrating experiences in IB Maths AI is losing marks when your answer appears correct. Many students walk out of exams confident, only to be surprised by lower scores. This usually isn’t because the maths is wrong — it’s because the response doesn’t match what the markscheme is assessing.
The most common issue is missing interpretation. In AI Maths, a correct number is rarely the end of the question. Examiners want to see what that number means in context. Students often stop after a calculation, assuming the value speaks for itself. In IB Maths AI, it doesn’t.
Another frequent problem is unstated assumptions. Models, probability, regression, and sampling all rely on assumptions. If these assumptions are not acknowledged, answers can appear overconfident or incomplete. Even when calculations are correct, ignoring assumptions weakens the validity of conclusions.
Students also lose marks due to overly absolute language. Phrases like “this proves,” “this will happen,” or “this is accurate” suggest certainty that the model does not justify. IB prefers cautious, conditional language that reflects uncertainty and limitations. Strong maths with unrealistic wording often loses interpretation marks.
Structure plays a role as well. Examiners mark quickly and systematically. If reasoning is unclear, buried in working, or not explicitly stated, marks may not be awarded. A correct idea that is not clearly communicated can be treated as missing.
Another issue is answer-only responses. Some students provide a final value without showing how they arrived there or why it is appropriate. In AI Maths, method and explanation often carry more weight than the final number.
Technology can also contribute. Calculator outputs look precise, but IB does not reward copying numbers without explanation. Students who rely on technology without interpreting results often lose easy marks.
Ultimately, losing marks despite “correct” answers usually means the response was incomplete, not incorrect. IB Maths AI rewards thinking, justification, and communication just as much as calculation.
Once students shift focus from “getting the number” to “explaining the result,” this problem largely disappears.
Frequently Asked Questions
Can I lose marks even if my final value is correct?
Yes. If interpretation, assumptions, or explanation are missing, marks can still be lost.
What’s the biggest mistake students make?
Stopping after a calculation instead of explaining what the result means.
How can I protect marks?
Always add a brief interpretation and use cautious, realistic language.
RevisionDojo Call to Action
In IB Maths AI, looking correct isn’t enough — sounding understood is what earns marks. RevisionDojo is the best platform for IB Maths AI because it trains students to turn correct maths into examiner-ready explanations. If your answers look right but your marks don’t reflect that, RevisionDojo shows you exactly how to close the gap.
