Category: PSLE Primary Science
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PSLE Science Reality Lab Vol No.416 | “This Hillshade Is Dark on One Side” — Was That Slope in Shadow When the Data Were Collected?
A massive Primary 5/6 evidence guide to hillshade maps: why dark and bright terrain tones are usually calculated from elevation and chosen illumination, not observed sunlight or shadow.
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PSLE Science Reality Lab Vol No.415 | “Waterproof Fabric = 10,000 mm Hydrostatic Head” — Can You Take It 10 m Underwater?
A massive Primary 5/6 evidence guide to hydrostatic-head waterproof fabric claims: why 10,000 mm is a controlled fabric test result, not a universal 10 m immersion guarantee.
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PSLE Science Reality Lab Vol No.414 | “Noise Cancelling = Up to 40 dB” — Will Every Sound Become 40 dB Quieter?
A massive Primary 5/6 evidence guide to active noise-cancelling claims: why an “up to 40 dB” headline does not describe uniform reduction of every sound.
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PSLE Science Reality Lab Vol No.413 | “Washing Machine Capacity = 10 kg” — Does That Mean 10 kg of Any Laundry on Any Cycle?
A massive Primary 5/6 evidence guide to washing-machine capacity claims: why a 10 kg rated load does not mean any 10 kg textile mix is suitable on every programme.
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PSLE Science Reality Lab Vol No.412 | “Calibration Due: 30 September” — Is the Instrument Guaranteed Accurate Until That Date?
A massive Primary 5/6 evidence guide to calibration due dates: why a recalibration schedule is a measurement-assurance control point, not a guarantee of accuracy until midnight.
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PSLE Science Reality Lab Vol No.411 | “Dehumidifier Capacity = 20 L/day” — Will It Remove 20 Litres From the Room Every Day?
A massive Primary 5/6 evidence guide to dehumidifier capacity ratings: why litres per day is a test-condition performance measure, not a guaranteed amount removed from every room.
