IB MYP Sciences: Command Terms and Keywords
IB MYP Sciences: Command terms and keywords
IB MYP Sciences (Biology, Chemistry, Physics, integrated or discrete) use MYP command terms across Criteria A–D. Assessment is criterion-based. Precise scientific terminology is essential for reaching higher achievement levels.
Key command terms for Sciences
| Command term | What to do | Common mistake |
|---|---|---|
| State | Short answer | Overwriting |
| Define | Precise meaning | Vague definition |
| Describe | Detailed account of process/structure | Adding explanation |
| Explain | Reasons and causes; mechanisms | Only describing |
| Compare | Similarities and/or differences | Listing separately |
| Suggest | Apply to new context | Textbook recall only |
| Evaluate | Strengths and limitations; judgement | Description only |
| Calculate | Numerical answer; show working; units | No working |
| Design | Plan experiment or investigation | Vague procedure |
| Investigate | Systematic enquiry | Unstructured |
| Analyse | Break down; show relationships | Surface-level |
| Outline | Brief account | Too much detail |
Scientific keywords (use correctly)
| Term | Use correctly | Avoid |
|---|---|---|
| Hypothesis | Testable prediction | Guess |
| Variable | Factor that changes (independent/dependent) | “Thing” |
| Control | Kept constant for comparison | ”Normal” |
| Conclusion | Supported by evidence | Opinion |
| Evidence | Data supporting claim | ”Proof” |
| Respiration | Release of energy from glucose | Breathing |
| Photosynthesis | Process in plants | ”Making food” |
| Reaction | Chemical change | ”Mixing” |
| Force | Push or pull; N | ”Strength” |
| Energy | Capacity to do work; J | ”Power” |
MYP Sciences criteria and command terms
- Criterion A: Knowing and understanding—State, Define, Describe, Outline
- Criterion B: Investigating—Design, Outline, Describe, Evaluate
- Criterion C: Processing and evaluating—Process, Interpret, Discuss, Evaluate
- Criterion D: Reflecting on the impacts of science—Explain, Discuss, Evaluate
Tips for MYP Sciences
- State—one word or short phrase
- Describe—structure, process, sequence; no “why”
- Explain—mechanisms and causes; use “because”
- Evaluate—strengths and limitations, then conclusion
- Design—clear variables; method; control
- Use precise terminology—check subject guide
How Tutopiya helps
Tutopiya supports IB MYP Sciences. Explore IB resources or book a free trial.
Based on MYP Sciences guide. Check your school’s MYP subject outline for criterion descriptors.
Written by
Tutopiya Team
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