MYP Math: Criterion A, B, C, D Explained Simply

Common mistake:
Assuming that correct answers automatically mean high marks overall.

Criterion B: Investigating Patterns

What it assesses:

• Identifying patterns
• Exploring relationships
• Making generalisations
• Justifying conclusions

This criterion often feels unfamiliar because it asks students to think like mathematicians, not calculators.

High-scoring responses:

• Clearly describe patterns
• Explain how the pattern works
• Justify rules or formulas logically

Common mistake:
Stating a pattern without explaining or proving it.

Criterion C: Communicating

What it assesses:

• Logical structure of working
• Clear explanation of reasoning
• Use of correct mathematical language and notation

In MYP Maths, how you show your thinking matters.

Strong Criterion C responses:

• Show steps in a logical order
• Label diagrams and graphs clearly
• Explain decisions, not just calculations

Common mistake:
Jumping straight to an answer with minimal or unclear working.

Criterion D: Applying Mathematics in Real-Life Contexts

What it assesses:

• Interpreting real-world problems
• Selecting appropriate mathematical strategies
• Explaining results in context

This criterion is where many capable students lose marks.

High-level responses:

• Explain why a method was chosen
• Interpret results meaningfully
• Connect maths back to the real situation

Common mistake:
Doing correct calculations but failing to explain what the answer means.

Why Students Often Get Stuck at a 5 or 6

Most students focus almost entirely on Criterion A.

As a result:

• Explanation is rushed
• Context is ignored
• Patterns are underdeveloped

Top-performing students distribute their effort across all four criteria, even when tasks feel calculation-heavy.

How Students Improve Faster Once the Criteria Click

Grades rise quickly when students:

• Identify which criterion a task targets
• Practise that skill intentionally
• Review feedback by criterion
• Rewrite explanations, not calculations

This is where structured practice becomes powerful. Tools like RevisionDojo help students practise MYP-style maths questions by criterion, receive feedback on explanation and application, and strengthen weaker areas without repeating the same type of mistake.

The result is balanced progress — not just more practice.

A Simple Way to Use the Criteria While Revising

When revising any MYP Maths question, students should ask:

1. Which criterion is this assessing?
2. What does a top-band response look like for that criterion?
3. Have I explained my thinking clearly enough?

These three questions alone prevent most lost marks.

Questions Students and Parents Often Ask

Can a student lose marks with the correct final answer?

Yes. Weak explanation, unclear working, or poor interpretation of context can reduce marks significantly.

Which criterion is most important?

None. High grades require balanced performance across all four.

Is Criterion D harder than the others?

Not mathematically — but it requires clearer explanation and interpretation, which many students aren’t used to.

How can students practise all four criteria effectively?

By using mixed, criterion-tagged questions and reviewing feedback by skill rather than by topic.

The Takeaway That Changes MYP Math Results

MYP Mathematics rewards students who think like mathematicians, not just calculators.

Once students understand what each criterion is asking for — and revise accordingly — grades stop feeling random and start feeling earned.

Learn how to structure MYP Individuals & Societies essays to meet criteria, build strong arguments, and score higher consistently.