Category: PSLE Primary Science
-
PSLE Science Reality Lab Vol No.526 | “The Line Connects the Measurements” — Was the Value Measured at Every Moment Between the Dots?
A Primary 5/6 evidence guide to connected scientific measurements: how to separate observed dots from interpolated, smoothed or modelled values between them.
-
PSLE Science Reality Lab Vol No.525 | “Result Above Calibration Range” — Can We Trust the Exact Concentration?
A Primary 5/6 evidence guide to results above a laboratory calibration range: why extrapolated exact concentrations need method support and why dilution and reanalysis can restore valid quantitation.
-
PSLE Science Reality Lab Vol No.524 | “This Scatter Plot Shows 80 Visible Dots” — Were There Only 80 Measurements?
A Primary 5/6 evidence guide to scatter-plot overplotting: why visible dots can undercount measurements when records overlap, and how transparency, jitter and raw counts change what the graph shows.
-
PSLE Science Reality Lab Vol No.523 | “Sample Receipt Temperature = 4°C” — Was the Sample Kept at 4°C for the Whole Journey?
A Primary 5/6 evidence guide to sample receipt temperature: why a 4°C arrival reading is not automatically a continuous cold-chain history, and what evidence would strengthen the claim.
-
PSLE Science Reality Lab Vol No.522 | “Cited 1,000 Times” — Does That Mean a Scientific Paper Was Confirmed 1,000 Times?
A massive Primary 5/6 PSLE Science Reality Lab guide to citation-count claims: why “cited 1,000 times” is not 1,000 replications, and how to identify later work that actually tests and confirms a scientific claim.
-
PSLE Science Reality Lab Vol No.521 | “This Histogram Has Two Peaks” — Does That Prove the Measurements Form Two Natural Groups?
A massive Primary 5/6 PSLE Science Reality Lab guide to histogram evidence: why two visible peaks can suggest two groups without proving them, and how bin width, boundaries, sampling and independent evidence change the conclusion.
