https://edukatesengkang.com/2026/09/19/psle-science-reality-lab-434-percent-bias-not-every-reading-fixed-error/eduKate Sengkangen2026-09-19T01:27:45+00:00PSLE Science Reality Lab Vol No.434 | “Percent Bias = +2%” — Is Every Reading Exactly 2% Too High?https://edukatesengkang.com/wp-content/uploads/2026/09/edukateprimarysingaporetuitioncentre13-09-2026-at-16.50.43-4-2.jpg?w=150https://edukatesengkang.com/2026/09/19/psle-science-reality-lab-433-scene-cloud-cover-not-target-area-clear/eduKate Sengkangen2026-09-19T01:25:47+00:00PSLE Science Reality Lab Vol No.433 | “Scene Cloud Cover = 10%” — Is My Target Area 90% Clear?https://edukatesengkang.com/wp-content/uploads/2026/09/edukateprimarysingaporetuitioncentre13-09-2026-at-16.50.43-8-2.jpg?w=150https://edukatesengkang.com/2026/09/19/psle-science-reality-lab-432-pressure-altitude-standard-atmosphere-not-geometric-height/eduKate Sengkangen2026-09-19T01:23:44+00:00PSLE Science Reality Lab Vol No.432 | “Pressure Altitude = 2,000 ft” — Is That Exactly 2,000 ft Above Sea Level?https://edukatesengkang.com/wp-content/uploads/2026/09/edukateprimarysingaporetuitioncentre13-09-2026-at-16.50.43-4-2.jpg?w=150https://edukatesengkang.com/2026/09/19/psle-science-reality-lab-431-charted-depth-datum-not-current-water-depth/eduKate Sengkangen2026-09-19T01:20:59+00:00PSLE Science Reality Lab Vol No.431 | “Charted Depth = 5 m” — Is the Water 5 m Deep Right Now?https://edukatesengkang.com/wp-content/uploads/2026/09/edukateprimarysingaporetuitioncentre13-09-2026-at-16.50.43-14-2.jpg?w=150https://edukatesengkang.com/2026/09/19/psle-science-reality-lab-430-per-serving-not-whole-package-total/eduKate Sengkangen2026-09-19T00:40:22+00:00PSLE Science Reality Lab Vol No.430 | “8 g Sugar per Serving” — Does the Whole Pack Contain 8 g?https://edukatesengkang.com/wp-content/uploads/2026/09/edukateprimarysingaporetuitioncentre13-09-2026-at-16.50.43-2.jpg?w=150https://edukatesengkang.com/2026/09/19/psle-science-reality-lab-429-map-colours-not-equal-number-ranges/eduKate Sengkangen2026-09-19T00:38:13+00:00PSLE Science Reality Lab Vol No.429 | “Four Equal-Looking Map Colours” — Are the Four Number Ranges Equal Too?https://edukatesengkang.com/wp-content/uploads/2026/09/edukateprimarysingaporetuitioncentre13-09-2026-at-16.50.43-12-2.jpg?w=150https://edukatesengkang.com/2026/09/19/psle-science-reality-lab-428-drinking-water-standards-not-zero-contaminants/eduKate Sengkangen2026-09-19T00:36:21+00:00PSLE Science Reality Lab Vol No.428 | “Meets Drinking-Water Standards” — Does That Mean Every Contaminant Is Zero?https://edukatesengkang.com/wp-content/uploads/2026/09/edukateprimarysingaporetuitioncentre13-09-2026-at-16.50.43-13-2.jpg?w=150https://edukatesengkang.com/2026/09/19/psle-science-reality-lab-427-24-hour-psi-not-current-concentration/eduKate Sengkangen2026-09-19T00:34:15+00:00PSLE Science Reality Lab Vol No.427 | “24-Hour PSI = 100” — Is the Pollutant Concentration 100 µg/m³ Right Now?https://edukatesengkang.com/wp-content/uploads/2026/09/edukateprimarysingaporetuitioncentre13-09-2026-at-16.50.43-2-2.jpg?w=150https://edukatesengkang.com/2026/09/19/psle-science-reality-lab-426-iso-14001-not-every-product-green/eduKate Sengkangen2026-09-18T23:40:49+00:00PSLE Science Reality Lab Vol No.426 | “ISO 14001 Certified” — Does That Mean Every Product Is Environmentally Friendly?https://edukatesengkang.com/wp-content/uploads/2026/09/edukateprimarysingaporetuitioncentre13-09-2026-at-16.50.43-11-2.jpg?w=150https://edukatesengkang.com/2026/09/19/psle-science-reality-lab-425-verified-epd-not-environmental-superiority/eduKate Sengkangen2026-09-18T23:37:24+00:00PSLE Science Reality Lab Vol No.425 | “Verified Environmental Product Declaration” — Does That Prove the Product Is Environmentally Better?https://edukatesengkang.com/wp-content/uploads/2026/09/edukateprimarysingaporetuitioncentre13-09-2026-at-16.50.43-5-2.jpg?w=150https://edukatesengkang.com/2026/09/19/psle-science-reality-lab-424-n95-not-95-percent-every-use/eduKate Sengkangen2026-09-18T23:35:21+00:00PSLE Science Reality Lab Vol No.424 | “N95” — Does 95 Mean It Blocks 95% of Every Airborne Particle in Every Use?https://edukatesengkang.com/wp-content/uploads/2026/09/edukateprimarysingaporetuitioncentre13-09-2026-at-16.50.43-10-1.jpg?w=150https://edukatesengkang.com/2026/09/19/psle-science-reality-lab-423-wels-four-ticks-not-one-quarter-water/eduKate Sengkangen2026-09-18T23:33:37+00:00PSLE Science Reality Lab Vol No.423 | “4-Tick WELS Washing Machine” — Does Four Ticks Mean It Uses One Quarter as Much Water?https://edukatesengkang.com/wp-content/uploads/2026/09/edukateprimarysingaporetuitioncentre13-09-2026-at-16.50.43-3-2.jpg?w=150