SHS1 Physics · Semester 1 Week 4: Introduction to Physics

Lesson notes

Learning Objectives

Indicator: 1.1.1.LI.4 - Explain the types of errors - systematic, random and parallax

By the end of the lesson, learners can:

Define systematic, random, and parallax errors in their own words and give at least one example of each.
Classify measurement errors they encounter in the laboratory (using a meter rule, protractor, electronic balance, vernier calliper, and micrometer screw gauge) as systematic, random, or parallax errors.
Explain the likely causes of each type of error, including instrument faults, environmental factors, observer limitations, and incorrect positioning.
Suggest practical ways to reduce or eliminate systematic, random, and parallax errors during measurement.
Work collaboratively in mixed-ability groups to identify and record errors from a shared measurement task, communicating their findings clearly to the class.

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Curriculum details

Strand: Mechanics and Matter (Strand 1)
Sub-strand: Introduction to Physics (1.1)
Content standard: 1.1.1.CS.2 - Demonstrate knowledge and understanding of physical quantities. 1.1.1.LO.2 Classify quantities into fundamental, derived, scalars, and vectors
Indicator: 1.1.1.LI.4 - Explain the types of errors - systematic, random and parallax
Suggested placement: Semester 1, Week 4 (Week 4 of the year)
Our suggestion, laid out in curriculum order across three terms of twelve weeks. NaCCA does not fix the week, so follow your school's scheme of learning.
Curriculum reference: NaCCA curriculum document, p. 29

Exemplars (from the NaCCA curriculum)

Talk for Learning: Discuss the various types of errors and let learners group the errors made in their respective measurement into systematic, random, and parallax errors.
Recognise diverse talents and perspectives.
Assessment (1.1.1.AS.4). The document marks these depth-of-knowledge levels for this indicator: Level 2 Skills of conceptual understanding.
Teaching and Learning Resources:
- Meter rule
- Protractor
- Electronic balance
- Vernier calliper and
- Micrometer screw gauge