Author: eduKate Asia
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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.
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PSLE Science Reality Lab Vol No.540 | “Pixel Value = 12,000 DN” — Is That Already a Physical Reflectance Measurement?
A massive Primary 5/6 PSLE Science evidence guide to satellite digital numbers: why a stored DN is not automatically a physical reflectance measurement, and how metadata, scaling and quality flags control the claim.
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PSLE Science Reality Lab Vol No.538 | “Absorbance = 2.0” — Did the Sample Absorb Twice as Much Light as Absorbance = 1.0?
A massive Primary 5/6 evidence guide to absorbance and transmittance: why absorbance 2.0 is not simply twice the percent light absorbed as absorbance 1.0.
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PSLE Science Reality Lab Vol No.537 | “This Museum Dinosaur Is One Skeleton” — Did Every Display Bone Come From One Animal?
A massive Primary 5/6 evidence guide to museum dinosaur mounts: how to separate original fossil, cast, reconstruction and composite evidence before claiming one complete animal was found.
