Explore the connections.

• 1.1.1(a) Experimental design, including to solve problems set in a practical context.
• 1.1.1(b) Identification of variables that must be controlled, where appropriate.
• 1.1.1(c) Evaluation that an experimental method is appropriate to meet the expected outcomes.
• 1.1.2(a) How to use a wide range of practical apparatus and techniques correctly.
• 1.1.2(b) Appropriate units for measurements.
• 1.1.2(c) Presenting observations and data in an appropriate format.
• 1.1.3(a) Processing, analysing and interpreting qualitative and quantitative experimental results.
• 1.1.3(b) Use of appropriate mathematical skills for analysis of quantitative data.
• 1.1.3(c) Appropriate use of significant figures.
• 1.1.3(d)(i) Selection and labelling of axes with appropriate scales, quantities and units.
• 1.1.3(d)(ii) Measurement of gradients and intercepts from experimental results.
• 1.1.4(a) How to evaluate results and draw conclusions.
• 1.1.4(b) Identification of anomalies in experimental measurements.
• 1.1.4(c) Limitations in experimental procedures.
• 1.1.4(d) Precision and accuracy of measurements and data, including margins of error, percentage errors and uncertainties in apparatus.
• 1.1.4(e) Refining experimental design by suggesting improvements to procedures and apparatus.

H156 v2.0 · May 2026