Category: Science
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PSLE Science Reality Lab Vol No.015 | “Waterproof” — Waterproof for How Deep, How Long and Under What Conditions?
A Primary 5/6 PSLE Science Reality Lab guide to evaluating “waterproof” claims by asking what was tested, under what water exposure, for how long, what counted as failure and how far the result can travel.
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PSLE Science Reality Lab Vol No.014 | “Up to 70% Better” — Is the Best Result the Typical Result?
A Primary 5/6 PSLE Science Reality Lab guide to evaluating “up to” claims by separating the best observed result from typical performance, checking the full range, baseline, test conditions and how often the maximum occurred.
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PSLE Science Reality Lab Vol No.013 | “Energy-Saving” — Were Both Devices Doing the Same Job?
A Primary 5/6 PSLE Science Reality Lab guide to evaluating energy-saving claims by checking useful output, test duration, operating conditions, system boundaries and whether lower energy use still means a fair comparison.
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PSLE Science Reality Lab Vol No.012 | “Biodegradable” — Under What Conditions, and How Long Does It Take?
A Primary 5/6 PSLE Science Reality Lab guide to evaluating biodegradable claims by checking test conditions, time, what was measured, what remained after testing and whether one environment supports a wider disposal claim.
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PSLE Science Reality Lab Vol No.011 | “No Germs Detected” — Does That Mean There Were None?
A Primary 5/6 PSLE Science Reality Lab guide to understanding non-detection: what was sampled, how sensitive the method was, what controls were used and why “not detected” is not automatically the same as “none exist”.
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PSLE Science Reality Lab Vol No.010 | “Lab Tested” — Does the Result Still Hold Outside the Laboratory?
A Primary 5/6 PSLE Science Reality Lab guide to evaluating “lab tested” claims by checking tested conditions, changed real-world conditions, measured outcomes, alternatives and how far the conclusion can travel.
