Category: Science

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A Primary 5/6 PSLE Science Reality Lab guide to “highest ever” and record-breaking claims. Learn to find the start and coverage of the measurement record, check gaps and method changes, and keep “highest in this dataset” separate from “highest in all history”.

PSLE Science Reality Lab Vol No.088 | “30% Less Material” — Less Per Pack, or Less for the Same Number of Uses?

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A Primary 5/6 PSLE Science Reality Lab guide to “less material” and packaging claims. Learn to compare material use for the same function, identify the true baseline and keep a narrow material result from becoming an unsupported total environmental claim.

PSLE Science Reality Lab Vol No.087 | “Absorbs Twice as Much” — Were the Same Amounts of Material Tested?

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A Primary 5/6 PSLE Science Reality Lab guide to absorbency claims. Learn why a bigger total can come from testing more material, how to choose a fair comparison basis and how to keep whole-product capacity separate from material performance.

PSLE Science Reality Lab Vol No.086 | “The Solid Line Becomes Dashed” — Where Did the Measurements End and the Projection Begin?

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A Primary 5/6 PSLE Science Reality Lab guide to charts that join observations to projections. Learn to locate the evidence boundary, distinguish measured data from modelled extension, check assumptions and state conclusions at the right scope.

PSLE Science Reality Lab Vol No.085 | “Lasts Twice as Long” — Did Both Tests Use the Same End Point?

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A Primary 5/6 PSLE Science Reality Lab guide to duration claims. Learn why time-to-failure comparisons need the same observable start and end criteria before “lasts twice as long” becomes meaningful.

PSLE Science Reality Lab Vol No.084 | “The Slice Got Bigger” — Did the Actual Amount Increase, or Did the Whole Get Smaller?

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