Category: Science
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PSLE Science Reality Lab Vol No.436 | “Systematic Review” — Does That Mean It Found Every Study Ever Done?
A student-facing PSLE Science guide to evaluating the label “systematic review”: reconstruct the question, search, selection rules, exclusions and evidence limits before treating a review as complete or universal.
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PSLE Science Reality Lab Vol No.435 | “Clinically Tested” — Does That Mean the Product Was Shown to Work?
A Primary 5/6 PSLE Science Reality Lab guide to reading “clinically tested” claims: identify what was tested, what outcome was measured, what comparison was used, and whether the evidence actually matches the advertised claim.
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PSLE Science Reality Lab Vol No.434 | “Percent Bias = +2%” — Is Every Reading Exactly 2% Too High?
A student-facing PSLE Science Reality Lab guide to reading percent bias as an average systematic difference from a reference rather than a fixed error in every individual measurement.
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PSLE Science Reality Lab Vol No.433 | “Scene Cloud Cover = 10%” — Is My Target Area 90% Clear?
A student-facing PSLE Science Reality Lab guide to interpreting satellite scene cloud-cover percentages as whole-scene evidence rather than a guarantee that one chosen target is clear.
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PSLE Science Reality Lab Vol No.432 | “Pressure Altitude = 2,000 ft” — Is That Exactly 2,000 ft Above Sea Level?
A student-facing PSLE Science Reality Lab guide to pressure altitude as a standard-atmosphere pressure representation rather than a direct geometric height, with original evidence cases, model checks and PSLE transfer practice.
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PSLE Science Reality Lab Vol No.431 | “Charted Depth = 5 m” — Is the Water 5 m Deep Right Now?
A student-facing PSLE Science Reality Lab guide to reading charted water depths as measurements referred to a chart datum, not as guaranteed current depth, and to checking water level, units, survey provenance and uncertainty before making a claim.
