Category: PSLE Primary Science
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PSLE Science Reality Lab Vol No.549 | “Control = 1.0; Treatment = 1.4” — Were Those the Raw Measurements?
A massive Primary 5/6 PSLE Science evidence guide to normalized graphs: why control = 1.0 and treatment = 1.4 may be relative values created from a baseline rather than the original measurements.
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PSLE Science Reality Lab Vol No.548 | “Pipette Set to 100 µL” — Did It Deliver Exactly 100.000 µL?
A massive Primary 5/6 PSLE Science evidence guide to pipette settings: why selecting 100 µL is not proof that exactly 100.000 µL was delivered, and how method, calibration, liquid and technique affect the claim.
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PSLE Science Reality Lab Vol No.547 | “Tare = 0.000 kg” — Does That Mean the Empty Container Has No Mass?
A massive Primary 5/6 PSLE Science evidence guide to tare: why a balance can show 0.000 kg while a container still has mass, and how to separate gross, tare and net readings before making a claim.
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PSLE Science Reality Lab Vol No.543 | “LiDAR Point Density = 8 points/m²” — Does Every Square Metre Contain Exactly Eight Points?
A massive Primary 5/6 PSLE Science evidence guide to LiDAR point density: why “8 points/m²” is a sampling-density description, not a promise of exactly eight returns in every square metre.
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PSLE Science Reality Lab Vol No.542 | “Filter Capacity = 1,000 Gallons” — Does It Work Perfectly Until Gallon 1,000 and Fail at 1,001?
A massive Primary 5/6 PSLE Science evidence guide to water-filter capacity claims: why a 1,000-gallon rating is a tested service boundary, not a perfect-before/fail-after cliff.
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PSLE Science Reality Lab Vol No.541 | “Ventilation Fan = 100 CFM” — Will It Move 100 CFM After Any Installation?
A massive Primary 5/6 PSLE Science evidence guide to fan airflow ratings: why 100 CFM is tied to test conditions and does not automatically guarantee the same airflow after any installation.
