Booklet B is not marked on understanding. It is marked on whether the answer contains the expected keywords, the cause, and the effect.
The most common Science complaint we hear from parents is some version of: "my child understood the question and still got zero." It is almost never a knowledge problem. Open-ended Science answers are marked against a scheme that looks for specific elements — and an answer can be true, sensible and empty of those elements at the same time.
Nearly every explain-style question wants three things:
| Element | What it means | Example (condensation) |
|---|---|---|
| Cause | What happened first, named precisely | "The water vapour in the surrounding air touched the cold surface of the glass…" |
| Process keyword | The syllabus term for what occurred | "…lost heat to the glass and condensed…" |
| Effect | The observed result the question asked about | "…forming water droplets on the outside of the glass." |
"The glass made the air wet" contains the same understanding and scores nothing: no process named, no heat transfer, no direction of cause.
Our P6 Science papers include Booklet B with mark-scheme self-marking: after answering, your child sees the scheme's expected points and marks their own answer against them — which is precisely the underline drill above, built in. The MCQ booklet is auto-marked with an explanation on every option.
Practise with the mark scheme beside you. Our P6 Science papers put Booklet B's expected answer points on screen after each attempt, so the cause-keyword-effect check happens on every question. P6 Science, S$60 for 12 months →
The same papers are also free to download as PDFs.
The wider revision method — sorting lost marks into did not know / misread / ran out of time / wrote it badly — is in the PSLE preparation guide. Science open-ended answers are the home of category four.
Open-ended answers are marked against expected points — typically a cause, a process keyword and an effect. An answer can show understanding while containing none of the expected elements, and it will score nothing. The fix is answer structure, not more content revision.
The precise syllabus terms for processes — condensation, evaporation, gains or loses heat, photosynthesis, germination and so on. Everyday paraphrases of the same idea usually do not earn the mark.
Booklet A is 28 multiple-choice questions marked right or wrong. Booklet B is open-ended: answers are marked against a scheme, which is where answering technique decides marks.
Rework questions they got wrong: underline the cause, keyword and effect in their own answer, find the missing element, and rewrite the answer as one complete sentence. A few of these per session outperforms a pile of fresh questions.