Category: Science
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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.
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PSLE Science Reality Lab Vol No.262 | “Battery State of Health = 80%” — Is the Battery Only 80% Charged?
A Primary 5/6 PSLE Science Reality Lab guide to evaluating battery State of Health percentages: separate SOH from current charge, identify the reference and method, and keep conclusions inside the evidence.
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PSLE Science Reality Lab Vol No.261 | “Fire Weather Index = 30” — Is There a 30% Chance of a Wildfire?
Learn why a Fire Weather Index value is not automatically a wildfire probability, fire count or current-fire detection, and how to interpret scientific indices by checking their definition, inputs and scale.
