Interactions
The most common mistakes Singapore primary students make in Interactions, distilled from 1270+ MOE-aligned questions across P3, P6. Free practice at every level.
Top 10 mistakes in Interactions
- #1Misconception
Gravity is a non-contact force.
- #2Misconception
Rougher surfaces increase friction.
- #3Misconception
This is the dependent variable being measured.
- #4Misconception
Plants are producers, not predators.
- #5Misconception
In mutualism, both organisms must benefit.
- #6Misconception
The student incorrectly believed that natural materials are attracted to magnets. Wood is not a magnetic material. Magnetic attraction depends on whether the material is iron, steel or nickel — not on whether it is natural.
- #7Misconception
North poles do not always attract. North poles attract south poles (unlike poles), but repel other north poles (like poles). Since attraction was observed, the poles must be unlike, so the right end of Magnet Q must be the south pole.
- #8Partial logic
South poles do not repel north poles — they attract them. Like poles repel. Unlike poles attract. This option correctly identifies the South pole but states the wrong reason.
- #9Misconception
Magnetic attraction is not random. The rule is definite: like poles (N–N or S–S) always repel; unlike poles (N–S) always attract. Since attraction was observed, the poles must be unlike.
- #10Misconception
Wood is not a magnetic material, so the wooden pencil will not be attracted to the magnet. Only the iron key is attracted.
Interactions diagrams
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