By Primary 5–6, many errors begin before the learner writes the answer. The student may know the topic but misunderstand the instruction verb: identify, describe, explain, compare, infer or justify.
This guide trains learners to recognise what each instruction asks them to do, what kind of evidence belongs in the response, and how much reasoning is required. It is an original eduKateSG practice guide, not an official examination paper.
Why Instruction Verbs Matter
Consider a passage about a character leaving home in a hurry.
“Identify one detail showing the character was rushed.”
“Explain how the writer shows the character was rushed.”
“Infer why the character may have left quickly.”
These questions use the same passage but ask for different thinking.
The Hidden Learning Problem: Students Answer the Topic, Not the Command
A learner may copy a detail when the question asks for an explanation, or give a long opinion when only identification is required.
The correction is not always “write more.” The correction is to match the response to the verb.
1. Identify — Find and Name
Identify asks the learner to locate or name the relevant item, feature, detail or idea.
Example: “Identify one word that shows the room was dark.”
A concise answer may be enough if the task requires only the word.
2. Describe — Tell What It Is Like or What Happens
Describe asks for relevant characteristics, features, sequence or state.
Example: “Describe how the crowd behaved.”
A useful answer reports what the crowd did without necessarily explaining why.
3. Explain — Show How or Why
Explain requires a relationship.
Example: “Explain how the broken sign caused confusion.”
A strong answer links cause and result rather than merely repeating “the sign was broken.”
4. Compare — Show Similarity and/or Difference
Compare requires at least two items and a criterion of comparison.
Weak: “Plan A is cheap. Plan B is fast.”
Stronger: “Plan A costs less, whereas Plan B can be completed sooner.”
The learner should make the relationship visible.
5. Infer — Reach a Supported Conclusion
Infer asks the learner to go beyond what is directly stated while staying within the evidence.
Example: “The lights were off, the door was locked and no one answered. What can you infer?”
Possible answer: “The occupants were probably not at home.”
The conclusion is supported, but not absolutely proved.
6. Justify — Give a Reasoned Defence
Justify asks the learner to support a choice, claim or judgement with relevant evidence or reasoning.
Example: “Which route is more suitable for the class? Justify your choice.”
The answer needs both the choice and the reason tied to a useful criterion.
The Command Fencing Method
We isolate one verb at a time before mixing them.
- Fence 1: identify vs describe;
- Fence 2: describe vs explain;
- Fence 3: explain vs infer;
- Fence 4: compare vs justify;
- Fence 5: mixed command practice.
This prevents the learner from treating every school question as “write everything you know.”
Worked Example: Same Information, Different Commands
Passage:
The playground was empty. Dark clouds covered the sky, and the first drops of rain began to fall. Hana ran towards the shelter.
Identify one sign of changing weather: dark clouds / first drops of rain.
Describe what Hana did: she ran towards the shelter.
Explain why moving to the shelter was sensible: rain had begun, so the shelter would protect her.
Infer why the playground may have been empty: people may already have left because rain was approaching.
Justify the claim that Hana reacted quickly: she ran as soon as the first drops began to fall.
Practice A — Match the Command to the Response
A1. “Name the two materials used.” → identify.
A2. “Tell how the two designs differ.” → compare/describe difference.
A3. “Show why the second method reduced waste.” → explain.
A4. “Work out what the character probably believed from the clues.” → infer.
A5. “Defend your choice using evidence.” → justify.
Practice B — Repair the Wrong Type of Answer
Question: “Explain why the container overflowed.”
Weak answer: “The container overflowed.”
Repair: “The container overflowed because more liquid was added after it had already reached capacity.”
Question: “Identify one disadvantage.”
Overwritten answer: a full paragraph with three unrelated advantages and two opinions.
Repair: name one relevant disadvantage clearly unless the mark scheme or instruction requires more.
Practice C — Compare With a Criterion
Two fictional routes:
- Route A: 20 minutes, one transfer.
- Route B: 25 minutes, no transfer.
Compare them by time and convenience.
Model: “Route A is faster, whereas Route B is simpler because it does not require a transfer.”
Practice D — Inference Must Stay Inside the Fence
Evidence: “Kai looked repeatedly at the clock and packed his books before the bell.”
Supported inference: Kai may have been eager or prepared to leave promptly.
Unsupported invention: Kai was late for a medical appointment. The evidence does not establish that.
What Happens During a Strong Vocabulary Lesson
Warm-up retrieval
Students classify instruction verbs from earlier lessons.
Single-command work
One command is practised across several contexts.
Contrast
Two similar commands are placed side by side.
Think-aloud response planning
Students say what the question requires before answering.
Independent application
Mixed commands appear without labels or hints.
Error review
The tutor identifies whether the error came from vocabulary, reading, evidence selection or reasoning.
Three Learner Pathways
Repair pathway
The learner routinely misreads commands. We reduce complexity and train one distinction at a time.
Stabilisation pathway
The learner knows the verbs but answers inconsistently under longer passages. We use mixed practice and response planning.
Extension pathway
The learner controls the commands and moves into multi-part questions, stronger evidence selection and concise analytical writing.
Common Errors We Watch For
- copying when explanation is required;
- explaining when only identification is required;
- comparing without a criterion;
- inferring beyond the evidence;
- justifying with personal preference rather than evidence;
- missing a second command in a two-part question.
What Progress Should Look Like
The learner begins to:
- pause at the command word;
- predict the required answer shape;
- write more concise responses;
- use evidence more accurately;
- separate description from explanation;
- infer without inventing;
- justify choices with criteria.
What Parents Can Practise at Home
Take one short newspaper paragraph, school notice or story extract and ask six different questions—one for each command verb. The content stays constant while the thinking job changes.
Frequently Asked Questions
Are these official command definitions?
They are practical teaching descriptions. Students should still follow the wording and marking requirements of their actual school or examination task.
Does “explain” always require “because”?
No, but the answer must show a relevant relationship such as cause, mechanism or reason.
Is inference guessing?
No. Inference is a conclusion supported by evidence beyond what is directly stated.
Why teach this in Vocabulary?
Because misunderstanding the command verb can block correct performance even when the learner knows the subject content.
Helpful Reading
Next Step
The goal is a learner who recognises the thinking job before producing the answer.
Continue through the Vocabulary Learning Hub or Primary English Tuition.