IB MYP Mathematics: Command terms

IB MYP Mathematics uses MYP command terms across Criteria A–D. Mathematics emphasises Calculate, Find, Solve, Apply and Justify. Clear working and correct notation are essential for reaching higher achievement levels.

Key command terms for Mathematics

Command term	What to do	Common mistake
State	Give value or expression	Showing working when not asked
Write	Give equation or expression	Incomplete
Write down	Give without working	Unnecessary working
Find	Obtain answer; show relevant working	No working
Calculate	Numerical answer; show stages	No working
Solve	Find value(s) satisfying equation	Incomplete solution
Apply	Use rule or method in context	Wrong method
Demonstrate	Show with reasoning	Skipping steps
Prove	Logical argument; each step justified	Assuming conclusion
Explain	Give reasons	Only stating
Justify	Give reasons to support	Unsupported claim
Sketch	Approximate graph; key features	Precise plot when sketch asked
Estimate	Approximate value; show reasoning	Random guess
Describe	Account of pattern/relationship	Adding calculation

MYP Mathematics criteria and command terms

• Criterion A: Knowing and understanding—State, Identify, Apply
• Criterion B: Investigating patterns—Describe, Find, Generalize
• Criterion C: Communicating—Present, Use, Explain
• Criterion D: Applying mathematics in real-life contexts—Apply, Calculate, Justify, Evaluate

Tips for MYP Mathematics

1. Show working—marks for method
2. Calculate—formula; substitute; answer; units if applicable
3. Justify—give reason for each step
4. Sketch—intercepts; shape; asymptotes; labelled axes
5. Use correct notation—symbols; units
6. Check criterion descriptors for level boundaries

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Based on MYP Mathematics guide. Check your school’s subject outline for criterion descriptors.

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