Category: Science
-
PSLE Science Reality Lab Vol No.418 | “Net Weight 500 g” — Was Every Pack Filled to Exactly 500.0 g?
A massive Primary 5/6 evidence guide to net-weight labels: why a printed 500 g declaration does not prove every individual package was filled to exactly 500.0 g.
-
PSLE Science Reality Lab Vol No.417 | “The Microscope Image Is Purple and Pink” — Were the Cells Naturally Those Colours?
A massive Primary 5/6 evidence guide to stained microscope images: why purple and pink H&E colours can come from laboratory dyes rather than the natural colour of tissue.
-
PSLE Science Reality Lab Vol No.416 | “This Hillshade Is Dark on One Side” — Was That Slope in Shadow When the Data Were Collected?
A massive Primary 5/6 evidence guide to hillshade maps: why dark and bright terrain tones are usually calculated from elevation and chosen illumination, not observed sunlight or shadow.
-
PSLE Science Reality Lab Vol No.415 | “Waterproof Fabric = 10,000 mm Hydrostatic Head” — Can You Take It 10 m Underwater?
A massive Primary 5/6 evidence guide to hydrostatic-head waterproof fabric claims: why 10,000 mm is a controlled fabric test result, not a universal 10 m immersion guarantee.
-
PSLE Science Reality Lab Vol No.414 | “Noise Cancelling = Up to 40 dB” — Will Every Sound Become 40 dB Quieter?
A massive Primary 5/6 evidence guide to active noise-cancelling claims: why an “up to 40 dB” headline does not describe uniform reduction of every sound.
-
PSLE Science Reality Lab Vol No.413 | “Washing Machine Capacity = 10 kg” — Does That Mean 10 kg of Any Laundry on Any Cycle?
A massive Primary 5/6 evidence guide to washing-machine capacity claims: why a 10 kg rated load does not mean any 10 kg textile mix is suitable on every programme.
