Category: Science
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PSLE Science Reality Lab Vol No.290 | “River Gauge = 3.0 m” — Is the River 3 m Deep?
A massive PSLE Science Reality Lab guide for Primary 5/6 learners on reading river stage or gage height without mistaking a datum-based water-level measurement for river depth or streamflow.
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PSLE Science Reality Lab Vol No.289 | “Forest Carbon Stock = 200 tC/ha” — Did the Forest Remove 200 tC/ha From the Air This Year?
A massive PSLE Science Reality Lab guide for Primary 5/6 learners on separating forest carbon stock from annual sequestration or net stock change when reading maps, reports and infographics.
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PSLE Science Reality Lab Vol No.288 | “TDS = 250 ppm” on a Pocket Meter — Did It Directly Measure 250 mg/L of Dissolved Solids?
A massive PSLE Science Reality Lab guide for Primary 5/6 learners on reading handheld TDS-meter values as conductivity-based estimates rather than direct measurements of every dissolved solid in water.
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PSLE Science Reality Lab Vol No.287 | “Radar Velocity = 20 m/s” — Is the Wind Actually 20 m/s in Any Direction?
A massive PSLE Science Reality Lab guide for Primary 5/6 learners on reading Doppler weather-radar velocity maps without mistaking radial motion toward or away from the radar for the full wind speed and direction.
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PSLE Science Reality Lab Vol No.286 | “Zero-VOC Paint” — Does That Mean No VOCs Can Ever Enter the Air?
A massive PSLE Science Reality Lab guide for Primary 5/6 learners on reading zero-VOC and low-VOC paint claims by separating VOC content, final formulation, definitions and emissions evidence without making unsupported safety claims.
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PSLE Science Reality Lab Vol No.285 | “Tree-Cover Loss = 500 ha” — Does That Mean 500 ha Was Permanently Deforested?
A massive PSLE Science Reality Lab guide for Primary 5/6 learners on distinguishing satellite-detected tree-cover loss from permanent deforestation by checking baseline forest type, driver, permanence and later land use.
