Category: Science
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PSLE Science Reality Lab Vol No.268 | “The Headline Says ‘Up 200%’” — How Big Was the Starting Amount?
A massive Primary 5/6 PSLE Science Reality Lab guide to percent-change headlines: recover the starting baseline and separate relative change from absolute magnitude before judging a claim.
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PSLE Science Reality Lab Vol No.267 | “Population Estimate = 1,200 Animals” — Were 1,200 Animals Actually Counted?
A massive Primary 5/6 PSLE Science Reality Lab guide to wildlife population estimates: separate directly observed animals from abundance inferred through sampling and models.
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PSLE Science Reality Lab Vol No.266 | “Above the Screening Level” — Does That Prove Harm Has Already Happened?
A massive Primary 5/6 PSLE Science Reality Lab guide to environmental screening levels: learn why an exceedance can justify further evaluation without automatically proving harm or a cleanup requirement.
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PSLE Science Reality Lab Vol No.265 | “System Availability = 95%” — Is It Producing 95% of Full Power?
A massive Primary 5/6 PSLE Science Reality Lab guide to system availability: learn why 95% availability is a time-and-capability measure, not 95% power output, efficiency or capacity factor.
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PSLE Science Reality Lab Vol No.264 | “Canopy Cover = 70%” — Does That Mean 70% of the Trees Are Still There?
A massive Primary 5/6 PSLE Science Reality Lab guide to canopy cover: learn why 70% canopy cover is an area measurement, not a tree count or complete forest-health score.
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PSLE Science Reality Lab Vol No.263 | “First-Pass Yield = 95%” — Does That Mean 95% of Finished Products Are Good?
A massive Primary 5/6 PSLE Science Reality Lab guide to first-pass yield: reconstruct the process boundary, denominator, rework path and final output before trusting a quality percentage.
