Practical assessment skills
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Paper 5 Planning, Analysis and Evaluation
P5.1Planning variables, method and apparatus
Identify independent, dependent and controlled variables; describe how variables are varied, measured and kept constant; and present a workable labelled apparatus arrangement and procedure.
P5.2Additional detail, safety and instrumentation
Add relevant practical detail, assess risks and precautions, and describe use of oscilloscopes, light gates, data loggers and sensors to measure quantities such as voltage, current, time, frequency, velocity and acceleration.
P5.3Data analysis models and graph transformations
Rearrange expressions into y = mx + c, y = ax^n and y = ae^(kx), use linear, logarithmic and exponential plots to find constants, and decide which derived quantities should be calculated for graphing.
P5.4Tables, graphs and uncertainty treatment
Complete tables using Paper 3 conventions, calculate and record derived quantities, plot graphs with error bars, draw best-fit and worst acceptable lines, and calculate uncertainties in derived quantities, gradients and intercepts.
P5.5Conclusions from constants, gradients and intercepts
Determine gradients and y-intercepts, derive expressions that link them to physical constants, state conclusions with units and appropriate significant figures, and express final values with uncertainty estimates.