Author: eduKate Asia
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PSLE Science Reality Lab Vol No.468 | “Data Deficient” — Does That Mean the Species Is Safe, Rare or Unstudied?
A massive Primary 5/6 PSLE Science Reality Lab guide to IUCN Data Deficient status: learn why insufficient extinction-risk evidence does not mean safe, threatened, rare or wholly unstudied, and how to identify the missing evidence.
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PSLE Science Reality Lab Vol No.467 | “Holotype” — Is This Specimen the Average Member of the Species?
A massive Primary 5/6 PSLE Science Reality Lab guide to holotype labels: learn why a name-bearing reference specimen is not automatically an average or typical member of its species, and how additional evidence is needed before generalising.
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PSLE Science Reality Lab Vol No.466 | “Raw Image” — Is This Exactly the Original Science Data From the Spacecraft?
A massive Primary 5/6 PSLE Science Reality Lab guide to scientific images labelled “raw”: why a quick public image can be largely unprocessed yet still not be the original archival science-data product, and how provenance, metadata and processing control what the image can prove.
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PSLE Science Reality Lab Vol No.465 | “I² = 80%” — Does That Mean 80% of the Studies Disagree?
A massive Primary 5/6 PSLE Science Reality Lab guide to I² in meta-analysis: why I² = 80% does not mean 80% of studies disagree, and how to inspect effect direction, uncertainty, study conditions and heterogeneity before trusting a headline.
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PSLE Science Reality Lab Vol No.464 | “δ18O = −10‰” — Is 10‰ of the Water Oxygen-18?
A massive Primary 5/6 PSLE Science Reality Lab guide to δ18O and stable-isotope delta notation: why a per-mille delta value is a difference from a reference isotope ratio, not the fraction of a sample made of oxygen-18.
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PSLE Science Reality Lab Vol No.463 | “Radiocarbon Age = 3000 BP” — Is That Simply 3000 Years Before 2026?
A massive Primary 5/6 PSLE Science Reality Lab guide to interpreting radiocarbon ages in BP: why “present” is fixed at 1950, why a conventional radiocarbon age is not automatically an exact calendar date, and how calibration, uncertainty and sample context control the claim.
