Category: Science
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PSLE Science Reality Lab Vol No.171 | “These Data Are Provisional” — Does That Mean They Are Wrong?
A Primary 5/6 PSLE Science Reality Lab guide to provisional scientific data: learn why timely observations can be useful before final review without being treated as either wrong or final.
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PSLE Science Reality Lab Vol No.170 | “Data Completeness = 95%” — Does That Mean the Measurements Are 95% Accurate?
A Primary 5/6 PSLE Science Reality Lab guide to data-completeness claims: learn why 95% complete means most expected observations are present, not that the measurements are 95% accurate.
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PSLE Science Reality Lab Vol No.170 | “Relative Humidity = 80%” — Is 80% of the Air Water?
A Primary 5/6 PSLE Science Reality Lab guide to relative humidity: learn why 80% RH is not 80% water, how temperature changes the percentage, and what a weather display really supports.
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PSLE Science Reality Lab Vol No.169 | “Wind Gust = 70 km/h” — Was the Wind Blowing at 70 km/h the Whole Time?
A Primary 5/6 evidence guide to wind reports: learn why a gust is a short peak or rapid fluctuation, not proof that the wind stayed at that speed for the whole observation period.
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PSLE Science Reality Lab Vol No.168 | “This City Is Twice as Bright at Night” — Does That Mean Twice as Many People Live There?
A Primary 5/6 evidence guide to satellite nighttime-lights images: learn why brightness measures detected light, not a direct headcount, and how to test population claims against alternative light sources and independent evidence.
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PSLE Science Reality Lab Vol No.167 | “The Epicentre Dot Is Right Here” — Is the Earthquake Location Exact to the Dot?
A Primary 5/6 evidence guide to earthquake maps: learn why an epicentre marker represents an estimated location with uncertainty, not an infinitely exact point on the ground.
