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No. 01 · PSLE Science · Parent guide

PSLE Science open-ended.

No. 02 · Quick answer

PSLE Science open-ended answers reward two things: using the exact syllabus keyword and showing a clear cause-effect chain. State the cause, link with ‘so that’ or ‘therefore’, then state the effect using the keyword from the marker scheme. Two or three linked sentences usually win full marks for a typical question.

Reviewed by the Geniebook Science curriculum team

No. 03 · Five steps to a marked answer

  1. Read the question twice

    Underline the key noun (the system being asked about) and the verb (explain, predict, suggest). The verb tells you what kind of answer to write. 'Explain' wants cause and effect. 'Predict' wants an outcome with a reason.

  2. Identify the topic and the keyword

    From the noun, name the topic (light, heat, plants, forces). Recall the one or two syllabus keywords that the marker is checking for. Write those words down before you start the sentence.

  3. Write the cause

    Start with what is happening. Use the syllabus noun. Example: 'When the metal spoon is placed in hot water, the heat from the water...'

  4. Link with 'so that' or 'therefore'

    These are the connector words PSLE markers reward. They show the cause-effect link clearly. Avoid 'and then' or 'after that', they read as a story not an explanation.

  5. Write the effect with the keyword

    End with the observable effect, using the syllabus keyword. Example: '...is transferred to the spoon, so the spoon gets hotter.' The mark is awarded against the keyword 'transferred'.

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No. 04 · Frequently asked

Frequently asked questions

What is a PSLE Science open-ended question?
PSLE Science Paper 2 contains open-ended questions where the student writes a short paragraph or labels a diagram, instead of selecting a multiple-choice option. Marks are awarded for using the correct keyword and showing a clear cause-effect chain.
How should my child structure an open-ended answer?
Use the cause-effect chain. State the cause, link with 'so that' or 'therefore', then state the effect using the syllabus keyword. Two or three linked sentences usually win full marks for a typical question.
What keywords do PSLE Science markers look for?
Each topic has a list of mark-scheme keywords (for example: photosynthesis, evaporation, condensation, gravitational force, fair test, controlled variable). Using the exact keyword from the syllabus is what unlocks the marks. Synonyms often do not count.
Should my child draw diagrams?
Yes when asked, no otherwise. If the question says 'draw and label', use a ruler, label every part with the syllabus keyword and show the direction of any flow with arrows. If the question only asks for an explanation, a diagram is not required and uses up time.
What is a fair test in PSLE Science?
A fair test is an experiment where only one variable is changed (the independent variable), one is measured (the dependent variable) and all others are kept the same (controlled variables). PSLE markers expect the student to name all three when asked about experiment design.
How does GenieOne help with PSLE Science?
Nora (the Science specialist tutor inside GenieOne) walks the student through the cause-effect chain for each topic, points out the correct keyword and gives feedback on a draft answer. Free to try at genie1.ai.