Chapter 1
Quantities and Measurement
State what a result means, give its unit where applicable, and justify its precision.
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Units, dimensions and estimates
Convert prefixes, derive units, check equations and justify the approximate size of a quantity.
Errors, accuracy and precision
Distinguish scatter from systematic effects and choose an improvement that addresses the actual limitation.
Uncertainty in calculated results
Select absolute or fractional uncertainty rules, check numerical bounds and identify the largest contribution.
Vectors and perpendicular components
Add and subtract coplanar vectors, resolve components and interpret the direction of a velocity change.
Paper 4: planning and data handling
Linearise a relationship, read gradients and uncertainties, use a spreadsheet and write a full plan.