Category: Science
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PSLE Science Reality Lab Vol No.017 | “More Foam Means Better Cleaning” — Does the Visible Sign Measure the Outcome We Care About?
A Primary 5/6 PSLE Science Reality Lab guide to evaluating claims that use foam as proof of better cleaning by separating a visible proxy from the target outcome, designing a fair comparison and checking whether the indicator is actually validated.
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PSLE Science Reality Lab Vol No.016 | “The Simulation Shows It” — Is a Model Prediction the Same as an Observation?
A Primary 5/6 PSLE Science Reality Lab guide to evaluating computer simulations by separating observations from model inputs, rules, outputs and predictions, then checking the model against real evidence.
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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.
