Lesson 05
Identifying Errors
Recognise sources of error, classify them, and suggest practical improvements.
Objectives
Lesson outcomes
- Identify sources of error in a practical.
- Categorise the errors as systematic or random errors.
- Suggest improvements to increase the accuracy and reliability of an experiment setup.
Syllabus
Syllabus points
No points linked
Add syllabus point codes to `syllabusPoints` to show them here.
Lesson Notes
Teacher and student guidance
Overview
Recognise sources of error, classify them, and suggest practical improvements.
Key knowledge and explanations
- Core practical focus: Recognise sources of error, classify them, and suggest practical improvements.
- Identify the variables, method steps, and data that matter.
- Note the equipment, safety points, and precision issues to emphasise.
Lesson flow
- Review the question, method, and success criteria for the practical work.
- Set up equipment and model any critical measurements or safety points.
- Collect results, observations, or graphs with checks on accuracy and control variables.
- Review conclusions, anomalies, and how the method could be improved.
Checks for understanding
- Check that students can justify the method and identify variables.
- Use one question on results, anomalies, or evaluation to test understanding.
Common mistakes or misconceptions
- Missing control variables, weak measurement technique, or poor recording of data.
- Safety, setup, or graphing errors that need modelling before students continue.
Follow-up
- Complete the write-up, analysis, or evaluation.
- Revisit the method or results in the next lesson if improvement is needed.