Author: eduKate Asia
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PSLE Science Reality Lab Vol No.499 | “Q30 Sequencing Quality” — Was the DNA Read 30 Times, or Is It 30% Accurate?
A massive Primary 5/6 PSLE Science Reality Lab guide to Q30 sequencing quality: why Q30 is a logarithmic base-call error score, not 30× coverage or 30% accuracy, and how to separate per-base quality, run summaries and DNA conclusions.
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PSLE Science Reality Lab Vol No.498 | “Occupancy Probability = 0.80” — Does the Species Occupy 80% of This Grid Cell?
A massive Primary 5/6 PSLE Science Reality Lab guide to species occupancy probability: why 0.80 is not 80% of a grid cell physically occupied, why imperfect detection matters, and how to read modelled presence evidence without turning probability into direct observation.
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PSLE Science Reality Lab Vol No.497 | “Band 13 = 10.33 µm” — Did the Satellite Measure Only One Exact Wavelength?
A massive Primary 5/6 PSLE Science Reality Lab guide to spectral-band labels: why a central wavelength such as 10.33 µm does not mean a satellite measured only one exact wavelength, and how to inspect bandpass, response curves, evidence scope and sensor metadata.
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PSLE Science Reality Lab Vol No.495 | “Total Exposure Time = 20 Hours” — Was This One 20-Hour Photograph?
A massive Primary 5/6 PSLE Science Reality Lab guide to astronomy-image evidence: learn why total exposure time can be accumulated from many separate frames, filters and observing periods, and how to distinguish a combined scientific image from one continuous photograph.
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PSLE Science Reality Lab Vol No.494 | “5σ Discovery” — Does Five Sigma Mean the Signal Is Five Times Stronger Than the Noise?
A massive Primary 5/6 PSLE Science Reality Lab guide to five-sigma science headlines: what 5σ does and does not say, why it is not a five-times-stronger signal claim, and how to evaluate the background model, evidence scope and alternative explanations.
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PSLE Science Reality Lab Vol No.493 | “Lightning Count = 100” — Were There 100 Separate Flashes?
A massive Primary 5/6 PSLE Science Reality Lab guide to lightning-count evidence: learn why events, groups and flashes are different counting objects, how satellite detection rules create the reported number, and how to test claims before treating one count as 100 separate lightning flashes.