Author: eduKate Asia
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PSLE Science Reality Lab Vol No.379 | “Hysteresis = 0.5% FS” — Can the Same Input Give Different Readings Depending on Which Direction It Came From?
PSLE Science Reality Lab: learn why the same input can produce slightly different sensor readings when approached from increasing and decreasing directions, and why a hysteresis specification is not the same as overall accuracy.
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PSLE Science Reality Lab Vol No.378 | “The Sensor Passed Its Zero Check” — Is It Accurate Across the Whole Range?
PSLE Science Reality Lab: learn why passing a sensor zero check supports performance at the checked low point but does not by itself prove accuracy across the whole measurement range.
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PSLE Science Reality Lab Vol No.377 | “n = 3 Technical Replicates” — Were There Three Independent Samples?
PSLE Science Reality Lab: learn why three technical replicates can be useful repeated measurements without automatically becoming three independent scientific samples.
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PSLE Science Reality Lab Vol No.376 | “20 mg/kg Dry Weight” — Is That 20 mg/kg in the Wet Sample Too?
PSLE Science Reality Lab: learn why a concentration reported per kilogram dry weight is not automatically the same number on a wet-weight basis, and how denominator choice changes interpretation.
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PSLE Science Reality Lab Vol No.375 | “24-Hour Composite Sample = 5 mg/L” — Was the Water 5 mg/L All Day?
PSLE Science Reality Lab: learn why one 24-hour composite-sample result represents a combined sampling design, not proof that the measured concentration stayed constant at every moment.
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PSLE Science Reality Lab Vol No.373 | “High-Impact Journal” — Does the Journal Name Prove This Result Is Stronger?
A massive Primary 5/6 PSLE Science Reality Lab guide to “high-impact journal” claims: why journal-level citation metrics do not prove the evidence quality of one individual study, and what students should inspect instead.
