Author: eduKate Asia
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PSLE Science Reality Lab Vol No.450 | “LOD90 = 2 ng” — Is Everything Above 2 ng Always Detected?
PSLE-SCI-REALITY-0450. A Primary 5/6 Reality Lab guide to LOD90 and probability-of-detection claims: a reported threshold is not a magic boundary where every amount above is always detected and every amount below is never detected.
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PSLE Science Reality Lab Vol No.449 | “Checksum Matches” — Does That Prove the Scientific Data Are Correct?
PSLE-SCI-REALITY-0449. A Primary 5/6 Reality Lab guide to checksum claims: a matching checksum supports digital file integrity, not the accuracy, validity or interpretation of the scientific measurements inside.
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PSLE Science Reality Lab Vol No.448 | “The Green Band Gets Thinner” — Did That Scientific Quantity Decrease?
A student-facing PSLE Science Reality Lab guide to stacked area charts: how to recover a middle component from its upper and lower boundaries and avoid mistaking a moving cumulative edge for the component’s own trend.
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PSLE Science Reality Lab Vol No.447 | “This Bubble Looks Twice as Wide” — Does It Represent Twice the Value?
A student-facing PSLE Science Reality Lab guide to bubble charts and bubble maps: why a circle that looks twice as wide may represent four times the value, and how to recover the scientific evidence behind symbol size.
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PSLE Science Reality Lab Vol No.446 | “Type Approved” — Was Every Individual Instrument Tested?
A student-facing PSLE Science Reality Lab guide to reading “type approved” correctly: evidence about an evaluated model or design is not proof that every individual instrument was separately tested or every later reading is accurate.
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PSLE Science Reality Lab Vol No.445 | “Self-Test: PASS” — Does That Mean Every Measurement Is Accurate?
A student-facing PSLE Science Reality Lab guide to interpreting “Self-Test: PASS” on scientific instruments without mistaking a successful diagnostic for proof that every later measurement is accurate.
