How to Perform in PSLE | Learner’s Guide Vol 0867 | Science: A Freely Suspended Bar Magnet Settles Along the North–South Direction

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1. State the observation precisely

A bar magnet suspended so that it can rotate freely settles along the north–south direction after its motion dies away. The statement concerns its alignment, not its height or speed.

Build the explanation by naming the freely turning magnet and its pivot and Earth’s magnetic field. A remembered keyword is not enough: connect the observation to the mechanism and identify what would have to change for the conclusion to change.

Repair the nearest misconception by checking the repeated resting direction and returning to direction finding versus testing a material or pole. State why the tempting alternative is too strong, incomplete or about a different stage.

• Check the freely turning magnet and its pivot.
• Check Earth’s magnetic field.
• Check the repeated resting direction.
• Check direction finding versus testing a material or pole.

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2. Name the interaction

Earth behaves as if it has a large magnetic field. That field exerts turning effects on the magnet until the magnet aligns with the field direction.

Build the explanation by naming the freely turning magnet and its pivot and Earth’s magnetic field. A remembered keyword is not enough: connect the observation to the mechanism and identify what would have to change for the conclusion to change.

Repair the nearest misconception by checking the repeated resting direction and returning to direction finding versus testing a material or pole. State why the tempting alternative is too strong, incomplete or about a different stage.

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3. Keep freely suspended visible

A magnet clamped, stuck by friction or touching a support may not turn into alignment. The ability to rotate is a required condition for the observation.

Build the explanation by naming the freely turning magnet and its pivot and Earth’s magnetic field. A remembered keyword is not enough: connect the observation to the mechanism and identify what would have to change for the conclusion to change.

Repair the nearest misconception by checking the repeated resting direction and returning to direction finding versus testing a material or pole. State why the tempting alternative is too strong, incomplete or about a different stage.

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4. Allow motion to settle

Immediately after release the magnet may swing past its final direction several times. Record the resting direction only after the oscillations become small.

Build the explanation by naming the freely turning magnet and its pivot and Earth’s magnetic field. A remembered keyword is not enough: connect the observation to the mechanism and identify what would have to change for the conclusion to change.

Repair the nearest misconception by checking the repeated resting direction and returning to direction finding versus testing a material or pole. State why the tempting alternative is too strong, incomplete or about a different stage.

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5. Distinguish direction from polarity

The north–south line alone does not label which end is north-seeking. A known compass direction or labelled reference is needed to identify the ends.

Build the explanation by naming the freely turning magnet and its pivot and Earth’s magnetic field. A remembered keyword is not enough: connect the observation to the mechanism and identify what would have to change for the conclusion to change.

Repair the nearest misconception by checking the repeated resting direction and returning to direction finding versus testing a material or pole. State why the tempting alternative is too strong, incomplete or about a different stage.

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6. Distinguish the test from attraction

Attracting an iron object helps show magnetic behaviour but does not by itself find geographical direction. Suspension uses alignment with Earth’s field.

Build the explanation by naming the freely turning magnet and its pivot and Earth’s magnetic field. A remembered keyword is not enough: connect the observation to the mechanism and identify what would have to change for the conclusion to change.

Repair the nearest misconception by checking the repeated resting direction and returning to direction finding versus testing a material or pole. State why the tempting alternative is too strong, incomplete or about a different stage.

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7. Control the investigation

Keep nearby magnets and large magnetic objects away, use a low-friction suspension and repeat after starting the magnet in different directions. Consistent settling strengthens the observation.

Build the explanation by naming the freely turning magnet and its pivot and Earth’s magnetic field. A remembered keyword is not enough: connect the observation to the mechanism and identify what would have to change for the conclusion to change.

Repair the nearest misconception by checking the repeated resting direction and returning to direction finding versus testing a material or pole. State why the tempting alternative is too strong, incomplete or about a different stage.

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8. Control examination answers

State the free rotation, north–south alignment and Earth’s magnetic field. Do not say the magnet is pulled bodily north or that north and south poles attract the geographical poles in a simple distance-only way.

Build the explanation by naming the freely turning magnet and its pivot and Earth’s magnetic field. A remembered keyword is not enough: connect the observation to the mechanism and identify what would have to change for the conclusion to change.

Repair the nearest misconception by checking the repeated resting direction and returning to direction finding versus testing a material or pole. State why the tempting alternative is too strong, incomplete or about a different stage.

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CHAPTER 9 OF 12 · Back to contents

9. Worked examples

Worked case 1: A freely suspended bar magnet stops along which direction?

Controlled answer. North–south. It aligns with Earth’s magnetic field.

Mechanism. Identify the exact relationship, apply the relevant rule and preserve every stated condition. A surface clue may be compatible with several explanations, so the answer must show what makes this case decisive.

Misconception repair. Do not turn partial evidence into complete proof. Name the closest wrong answer, identify its missing condition and explain why the observed evidence supports the narrower conclusion.

Transfer. Restart it from east–west and observe again. Solve the altered case from the mechanism rather than copying the previous wording.

Reverse construction. Begin with the controlled answer “North–south” and invent a fresh prompt that would justify it for the same reason. Then change one decisive condition to create a near-nonexample. This reverse task checks whether the learner owns the boundary rather than merely recognising the original sentence.

Explanation standard. A complete explanation names the observation, connects it to the rule and limits the conclusion to what follows. It should remain valid if decorative details are removed. If the explanation depends on the story topic instead of the decisive relation, rebuild it.

Audit. Recheck the freely turning magnet and its pivot, Earth’s magnetic field, the repeated resting direction, direction finding versus testing a material or pole. Decide whether the evidence proves the conclusion or only supports a limited statement.

Worked case 2: Why must the magnet be free to turn?

Controlled answer. Alignment requires rotation. A fixed magnet cannot respond visibly by changing orientation.

Mechanism. Identify the exact relationship, apply the relevant rule and preserve every stated condition. A surface clue may be compatible with several explanations, so the answer must show what makes this case decisive.

Misconception repair. Do not turn partial evidence into complete proof. Name the closest wrong answer, identify its missing condition and explain why the observed evidence supports the narrower conclusion.

Transfer. Compare a clamped magnet. Solve the altered case from the mechanism rather than copying the previous wording.

Reverse construction. Begin with the controlled answer “Alignment requires rotation” and invent a fresh prompt that would justify it for the same reason. Then change one decisive condition to create a near-nonexample. This reverse task checks whether the learner owns the boundary rather than merely recognising the original sentence.

Explanation standard. A complete explanation names the observation, connects it to the rule and limits the conclusion to what follows. It should remain valid if decorative details are removed. If the explanation depends on the story topic instead of the decisive relation, rebuild it.

Audit. Recheck the freely turning magnet and its pivot, Earth’s magnetic field, the repeated resting direction, direction finding versus testing a material or pole. Decide whether the evidence proves the conclusion or only supports a limited statement.

Worked case 3: Does the magnet necessarily point north immediately after release?

Controlled answer. No. It may oscillate before settling.

Mechanism. Identify the exact relationship, apply the relevant rule and preserve every stated condition. A surface clue may be compatible with several explanations, so the answer must show what makes this case decisive.

Misconception repair. Do not turn partial evidence into complete proof. Name the closest wrong answer, identify its missing condition and explain why the observed evidence supports the narrower conclusion.

Transfer. Record direction only after motion reduces. Solve the altered case from the mechanism rather than copying the previous wording.

Reverse construction. Begin with the controlled answer “No” and invent a fresh prompt that would justify it for the same reason. Then change one decisive condition to create a near-nonexample. This reverse task checks whether the learner owns the boundary rather than merely recognising the original sentence.

Explanation standard. A complete explanation names the observation, connects it to the rule and limits the conclusion to what follows. It should remain valid if decorative details are removed. If the explanation depends on the story topic instead of the decisive relation, rebuild it.

Audit. Recheck the freely turning magnet and its pivot, Earth’s magnetic field, the repeated resting direction, direction finding versus testing a material or pole. Decide whether the evidence proves the conclusion or only supports a limited statement.

Worked case 4: What environmental factor can disturb the result?

Controlled answer. A nearby magnet or large magnetic object. An additional magnetic field can change the resting direction.

Mechanism. Identify the exact relationship, apply the relevant rule and preserve every stated condition. A surface clue may be compatible with several explanations, so the answer must show what makes this case decisive.

Misconception repair. Do not turn partial evidence into complete proof. Name the closest wrong answer, identify its missing condition and explain why the observed evidence supports the narrower conclusion.

Transfer. Remove the object and repeat. Solve the altered case from the mechanism rather than copying the previous wording.

Reverse construction. Begin with the controlled answer “A nearby magnet or large magnetic object” and invent a fresh prompt that would justify it for the same reason. Then change one decisive condition to create a near-nonexample. This reverse task checks whether the learner owns the boundary rather than merely recognising the original sentence.

Explanation standard. A complete explanation names the observation, connects it to the rule and limits the conclusion to what follows. It should remain valid if decorative details are removed. If the explanation depends on the story topic instead of the decisive relation, rebuild it.

Audit. Recheck the freely turning magnet and its pivot, Earth’s magnetic field, the repeated resting direction, direction finding versus testing a material or pole. Decide whether the evidence proves the conclusion or only supports a limited statement.

Worked case 5: Can attraction to a paper clip identify the north-seeking pole?

Controlled answer. No. Both poles of a magnet can attract an unmagnetised magnetic material.

Mechanism. Identify the exact relationship, apply the relevant rule and preserve every stated condition. A surface clue may be compatible with several explanations, so the answer must show what makes this case decisive.

Misconception repair. Do not turn partial evidence into complete proof. Name the closest wrong answer, identify its missing condition and explain why the observed evidence supports the narrower conclusion.

Transfer. Use a known direction or pole test. Solve the altered case from the mechanism rather than copying the previous wording.

Reverse construction. Begin with the controlled answer “No” and invent a fresh prompt that would justify it for the same reason. Then change one decisive condition to create a near-nonexample. This reverse task checks whether the learner owns the boundary rather than merely recognising the original sentence.

Explanation standard. A complete explanation names the observation, connects it to the rule and limits the conclusion to what follows. It should remain valid if decorative details are removed. If the explanation depends on the story topic instead of the decisive relation, rebuild it.

Audit. Recheck the freely turning magnet and its pivot, Earth’s magnetic field, the repeated resting direction, direction finding versus testing a material or pole. Decide whether the evidence proves the conclusion or only supports a limited statement.

Worked case 6: Repair: Earth pulls the whole bar magnet towards the North Pole.

Controlled answer. Earth’s magnetic field turns the magnet into north–south alignment. The key observation is orientation, not bodily travel north.

Mechanism. Identify the exact relationship, apply the relevant rule and preserve every stated condition. A surface clue may be compatible with several explanations, so the answer must show what makes this case decisive.

Misconception repair. Do not turn partial evidence into complete proof. Name the closest wrong answer, identify its missing condition and explain why the observed evidence supports the narrower conclusion.

Transfer. Describe the turning evidence. Solve the altered case from the mechanism rather than copying the previous wording.

Reverse construction. Begin with the controlled answer “Earth’s magnetic field turns the magnet into north–south alignment” and invent a fresh prompt that would justify it for the same reason. Then change one decisive condition to create a near-nonexample. This reverse task checks whether the learner owns the boundary rather than merely recognising the original sentence.

Explanation standard. A complete explanation names the observation, connects it to the rule and limits the conclusion to what follows. It should remain valid if decorative details are removed. If the explanation depends on the story topic instead of the decisive relation, rebuild it.

Audit. Recheck the freely turning magnet and its pivot, Earth’s magnetic field, the repeated resting direction, direction finding versus testing a material or pole. Decide whether the evidence proves the conclusion or only supports a limited statement.

Worked case 7: Repair: any suspended metal strip points north–south.

Controlled answer. A magnetised strip that can rotate freely shows the effect. An ordinary non-magnetic strip need not align.

Mechanism. Identify the exact relationship, apply the relevant rule and preserve every stated condition. A surface clue may be compatible with several explanations, so the answer must show what makes this case decisive.

Misconception repair. Do not turn partial evidence into complete proof. Name the closest wrong answer, identify its missing condition and explain why the observed evidence supports the narrower conclusion.

Transfer. Include a control strip. Solve the altered case from the mechanism rather than copying the previous wording.

Reverse construction. Begin with the controlled answer “A magnetised strip that can rotate freely shows the effect” and invent a fresh prompt that would justify it for the same reason. Then change one decisive condition to create a near-nonexample. This reverse task checks whether the learner owns the boundary rather than merely recognising the original sentence.

Explanation standard. A complete explanation names the observation, connects it to the rule and limits the conclusion to what follows. It should remain valid if decorative details are removed. If the explanation depends on the story topic instead of the decisive relation, rebuild it.

Audit. Recheck the freely turning magnet and its pivot, Earth’s magnetic field, the repeated resting direction, direction finding versus testing a material or pole. Decide whether the evidence proves the conclusion or only supports a limited statement.

Worked case 8: Why repeat from different starting directions?

Controlled answer. To show the same resting direction is not just the initial placement. Repeated convergence supports the alignment explanation.

Mechanism. Identify the exact relationship, apply the relevant rule and preserve every stated condition. A surface clue may be compatible with several explanations, so the answer must show what makes this case decisive.

Misconception repair. Do not turn partial evidence into complete proof. Name the closest wrong answer, identify its missing condition and explain why the observed evidence supports the narrower conclusion.

Transfer. Use at least three starts. Solve the altered case from the mechanism rather than copying the previous wording.

Reverse construction. Begin with the controlled answer “To show the same resting direction is not just the initial placement” and invent a fresh prompt that would justify it for the same reason. Then change one decisive condition to create a near-nonexample. This reverse task checks whether the learner owns the boundary rather than merely recognising the original sentence.

Explanation standard. A complete explanation names the observation, connects it to the rule and limits the conclusion to what follows. It should remain valid if decorative details are removed. If the explanation depends on the story topic instead of the decisive relation, rebuild it.

Audit. Recheck the freely turning magnet and its pivot, Earth’s magnetic field, the repeated resting direction, direction finding versus testing a material or pole. Decide whether the evidence proves the conclusion or only supports a limited statement.

Worked case 9: What does friction do?

Controlled answer. It can prevent or slow rotation. Too much friction may hide the alignment effect.

Mechanism. Identify the exact relationship, apply the relevant rule and preserve every stated condition. A surface clue may be compatible with several explanations, so the answer must show what makes this case decisive.

Misconception repair. Do not turn partial evidence into complete proof. Name the closest wrong answer, identify its missing condition and explain why the observed evidence supports the narrower conclusion.

Transfer. Improve the pivot. Solve the altered case from the mechanism rather than copying the previous wording.

Reverse construction. Begin with the controlled answer “It can prevent or slow rotation” and invent a fresh prompt that would justify it for the same reason. Then change one decisive condition to create a near-nonexample. This reverse task checks whether the learner owns the boundary rather than merely recognising the original sentence.

Explanation standard. A complete explanation names the observation, connects it to the rule and limits the conclusion to what follows. It should remain valid if decorative details are removed. If the explanation depends on the story topic instead of the decisive relation, rebuild it.

Audit. Recheck the freely turning magnet and its pivot, Earth’s magnetic field, the repeated resting direction, direction finding versus testing a material or pole. Decide whether the evidence proves the conclusion or only supports a limited statement.

Worked case 10: If the magnet rests east–west near another magnet, what should be suspected?

Controlled answer. The nearby magnetic field is disturbing the setup. The local condition differs from the intended Earth-field test.

Mechanism. Identify the exact relationship, apply the relevant rule and preserve every stated condition. A surface clue may be compatible with several explanations, so the answer must show what makes this case decisive.

Misconception repair. Do not turn partial evidence into complete proof. Name the closest wrong answer, identify its missing condition and explain why the observed evidence supports the narrower conclusion.

Transfer. Remove the source and retry. Solve the altered case from the mechanism rather than copying the previous wording.

Reverse construction. Begin with the controlled answer “The nearby magnetic field is disturbing the setup” and invent a fresh prompt that would justify it for the same reason. Then change one decisive condition to create a near-nonexample. This reverse task checks whether the learner owns the boundary rather than merely recognising the original sentence.

Explanation standard. A complete explanation names the observation, connects it to the rule and limits the conclusion to what follows. It should remain valid if decorative details are removed. If the explanation depends on the story topic instead of the decisive relation, rebuild it.

Audit. Recheck the freely turning magnet and its pivot, Earth’s magnetic field, the repeated resting direction, direction finding versus testing a material or pole. Decide whether the evidence proves the conclusion or only supports a limited statement.

Worked case 11: Does the north–south line tell which end is north-seeking?

Controlled answer. Not by itself. The line has two opposite directions.

Mechanism. Identify the exact relationship, apply the relevant rule and preserve every stated condition. A surface clue may be compatible with several explanations, so the answer must show what makes this case decisive.

Misconception repair. Do not turn partial evidence into complete proof. Name the closest wrong answer, identify its missing condition and explain why the observed evidence supports the narrower conclusion.

Transfer. Use a labelled compass reference. Solve the altered case from the mechanism rather than copying the previous wording.

Reverse construction. Begin with the controlled answer “Not by itself” and invent a fresh prompt that would justify it for the same reason. Then change one decisive condition to create a near-nonexample. This reverse task checks whether the learner owns the boundary rather than merely recognising the original sentence.

Explanation standard. A complete explanation names the observation, connects it to the rule and limits the conclusion to what follows. It should remain valid if decorative details are removed. If the explanation depends on the story topic instead of the decisive relation, rebuild it.

Audit. Recheck the freely turning magnet and its pivot, Earth’s magnetic field, the repeated resting direction, direction finding versus testing a material or pole. Decide whether the evidence proves the conclusion or only supports a limited statement.

Worked case 12: What is the dependent observation?

Controlled answer. The direction in which the magnet finally rests. The investigation records orientation after settling.

Mechanism. Identify the exact relationship, apply the relevant rule and preserve every stated condition. A surface clue may be compatible with several explanations, so the answer must show what makes this case decisive.

Misconception repair. Do not turn partial evidence into complete proof. Name the closest wrong answer, identify its missing condition and explain why the observed evidence supports the narrower conclusion.

Transfer. Name controlled conditions. Solve the altered case from the mechanism rather than copying the previous wording.

Reverse construction. Begin with the controlled answer “The direction in which the magnet finally rests” and invent a fresh prompt that would justify it for the same reason. Then change one decisive condition to create a near-nonexample. This reverse task checks whether the learner owns the boundary rather than merely recognising the original sentence.

Explanation standard. A complete explanation names the observation, connects it to the rule and limits the conclusion to what follows. It should remain valid if decorative details are removed. If the explanation depends on the story topic instead of the decisive relation, rebuild it.

Audit. Recheck the freely turning magnet and its pivot, Earth’s magnetic field, the repeated resting direction, direction finding versus testing a material or pole. Decide whether the evidence proves the conclusion or only supports a limited statement.

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CHAPTER 10 OF 12 · Back to contents

10. Independent practice

Practice 1: Why use a light balanced magnet?

Explained answer. It turns more readily and avoids a strong mechanical bias. The suspension should allow magnetic alignment to be observed.

Delayed transfer. Check balance before the trial. Cover the answer later and rebuild the chain.

Control question. Which exact condition does the nearest wrong answer miss? State it before checking.

Extension. Change one decisive feature while keeping the story similar. Explain why the conclusion now stays or changes.

Independent proof. Restate the answer without copying its wording. Your version must identify the evidence, the governing relationship and the boundary of the claim. Then write one fact that would be relevant but still insufficient on its own. This separates explanation from repetition.

Delayed comparison. Save this item beside the near-nonexample you created. On the next attempt, compare them before answering and point to the single feature that controls the difference. If more than one feature changed, revise the pair so the comparison stays fair.

Practice 2: A magnet swings repeatedly. When should the reading be taken?

Explained answer. After it settles to a stable direction. A moving instant may not represent equilibrium alignment.

Delayed transfer. Record several settled trials. Cover the answer later and rebuild the chain.

Control question. Which exact condition does the nearest wrong answer miss? State it before checking.

Extension. Change one decisive feature while keeping the story similar. Explain why the conclusion now stays or changes.

Independent proof. Restate the answer without copying its wording. Your version must identify the evidence, the governing relationship and the boundary of the claim. Then write one fact that would be relevant but still insufficient on its own. This separates explanation from repetition.

Delayed comparison. Save this item beside the near-nonexample you created. On the next attempt, compare them before answering and point to the single feature that controls the difference. If more than one feature changed, revise the pair so the comparison stays fair.

Practice 3: What does a compass contain?

Explained answer. A small magnetised pointer free to rotate. Its direction-finding job uses the same alignment principle.

Delayed transfer. Connect pointer movement to Earth’s field. Cover the answer later and rebuild the chain.

Control question. Which exact condition does the nearest wrong answer miss? State it before checking.

Extension. Change one decisive feature while keeping the story similar. Explain why the conclusion now stays or changes.

Independent proof. Restate the answer without copying its wording. Your version must identify the evidence, the governing relationship and the boundary of the claim. Then write one fact that would be relevant but still insufficient on its own. This separates explanation from repetition.

Delayed comparison. Save this item beside the near-nonexample you created. On the next attempt, compare them before answering and point to the single feature that controls the difference. If more than one feature changed, revise the pair so the comparison stays fair.

Practice 4: Can the setup test whether an unknown object is magnetic material?

Explained answer. Not directly. Direction alignment and material attraction are different tests.

Delayed transfer. Choose an attraction test for the material. Cover the answer later and rebuild the chain.

Control question. Which exact condition does the nearest wrong answer miss? State it before checking.

Extension. Change one decisive feature while keeping the story similar. Explain why the conclusion now stays or changes.

Independent proof. Restate the answer without copying its wording. Your version must identify the evidence, the governing relationship and the boundary of the claim. Then write one fact that would be relevant but still insufficient on its own. This separates explanation from repetition.

Delayed comparison. Save this item beside the near-nonexample you created. On the next attempt, compare them before answering and point to the single feature that controls the difference. If more than one feature changed, revise the pair so the comparison stays fair.

Practice 5: What control could be used?

Explained answer. Suspend a similar unmagnetised strip under the same conditions. The comparison separates magnetism from suspension shape.

Delayed transfer. Predict the control result cautiously. Cover the answer later and rebuild the chain.

Control question. Which exact condition does the nearest wrong answer miss? State it before checking.

Extension. Change one decisive feature while keeping the story similar. Explain why the conclusion now stays or changes.

Independent proof. Restate the answer without copying its wording. Your version must identify the evidence, the governing relationship and the boundary of the claim. Then write one fact that would be relevant but still insufficient on its own. This separates explanation from repetition.

Delayed comparison. Save this item beside the near-nonexample you created. On the next attempt, compare them before answering and point to the single feature that controls the difference. If more than one feature changed, revise the pair so the comparison stays fair.

Practice 6: Why avoid an iron table?

Explained answer. Magnetic material nearby may influence or hinder the magnet. The apparatus environment must not introduce a competing effect.

Delayed transfer. Choose a suitable support. Cover the answer later and rebuild the chain.

Control question. Which exact condition does the nearest wrong answer miss? State it before checking.

Extension. Change one decisive feature while keeping the story similar. Explain why the conclusion now stays or changes.

Independent proof. Restate the answer without copying its wording. Your version must identify the evidence, the governing relationship and the boundary of the claim. Then write one fact that would be relevant but still insufficient on its own. This separates explanation from repetition.

Delayed comparison. Save this item beside the near-nonexample you created. On the next attempt, compare them before answering and point to the single feature that controls the difference. If more than one feature changed, revise the pair so the comparison stays fair.

Practice 7: What is the nearest misconception?

Explained answer. Confusing alignment with a translational pull or with simple attraction. The magnet turns to a direction while staying at its suspension point.

Delayed transfer. Draw before and after orientations. Cover the answer later and rebuild the chain.

Control question. Which exact condition does the nearest wrong answer miss? State it before checking.

Extension. Change one decisive feature while keeping the story similar. Explain why the conclusion now stays or changes.

Independent proof. Restate the answer without copying its wording. Your version must identify the evidence, the governing relationship and the boundary of the claim. Then write one fact that would be relevant but still insufficient on its own. This separates explanation from repetition.

Delayed comparison. Save this item beside the near-nonexample you created. On the next attempt, compare them before answering and point to the single feature that controls the difference. If more than one feature changed, revise the pair so the comparison stays fair.

Practice 8: State the complete explanation.

Explained answer. A freely rotating bar magnet responds to Earth’s magnetic field and turns until it settles along the north–south direction. Free rotation, settling and an undisturbed setup are required.

Delayed transfer. Design a repeatable school investigation. Cover the answer later and rebuild the chain.

Control question. Which exact condition does the nearest wrong answer miss? State it before checking.

Extension. Change one decisive feature while keeping the story similar. Explain why the conclusion now stays or changes.

Independent proof. Restate the answer without copying its wording. Your version must identify the evidence, the governing relationship and the boundary of the claim. Then write one fact that would be relevant but still insufficient on its own. This separates explanation from repetition.

Delayed comparison. Save this item beside the near-nonexample you created. On the next attempt, compare them before answering and point to the single feature that controls the difference. If more than one feature changed, revise the pair so the comparison stays fair.

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CHAPTER 11 OF 12 · Back to contents

11. Delayed transfer

On day one, solve clear examples. On day three, mix examples, near-nonexamples and incomplete evidence. On day seven, solve without headings or a word bank. Delay reveals whether the method can be reconstructed independently.

Keep an error log for the first failed stage: reading, representation, rule, execution or checking. The earliest failure identifies the repair.

Interleave this skill with neighbouring ideas that share vocabulary. Classify each item only after naming the distinguishing condition.

In timed work, mark the relationship, apply the rule, write the conclusion and audit one condition. If checking changes the answer, record the overlooked feature.

Create a teach-back card with a near-nonexample on the front and the repaired mechanism on the back. Explain why the tempting answer fails.

Finish with one basic example, one boundary case and one transfer case. Supply explanations that a classmate can verify.

For a second delayed test, reverse the direction: start from a conclusion and invent evidence that would justify it, then evidence that would be insufficient. This exposes the boundary between relevance and proof.

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CHAPTER 12 OF 12 · Back to contents

12. Family guidance and FAQs

Guidance for parents and tutors

Ask for the decisive condition before confirming the answer. Use prompts such as “What exactly happened?”, “Which stage or meaning is this?” and “What would prove it?”

Fade support from labelled examples to mixed questions and delayed open response. Independent retrieval after time and topic change is the target.

Praise precise claim control. Narrowing an answer when evidence is incomplete is scientific and academic strength.

Frequently asked questions

Should I memorise the rule?

Memorise the compact rule, then practise examples and near-nonexamples so the conditions remain visible.

What if two answers seem possible?

Return to the exact relationship and choose the option satisfying every stated condition without adding facts.

Why delay practice?

Immediate repetition may depend on the recent explanation; delay tests reconstruction.

How should an error be corrected?

Name the first failed stage and practise it with a changed example.

When is the skill ready?

When the learner can explain, apply and transfer it after a delay.

What is the final audit?

Check relationship, mechanism, claim strength and whole-question fit.

Next routes

Continue at the Science learning hub or return to the series directory.

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