SHS1 Physics · Semester 1 Week 5: Introduction to Physics

Lesson notes

Learning Objectives

Indicator: 1.1.1.LI.6 - Distinguish scalars from vectors (qualitative treatment)

By the end of the lesson, learners can:

Define a scalar quantity as a physical quantity that has magnitude only, and a vector quantity as a physical quantity that has both magnitude and direction.
Give at least three examples of scalar quantities and three examples of vector quantities from everyday life and from physics.
Classify the quantities velocity, acceleration, mass, length, time, weight, energy, power and force into scalars and vectors with 100% accuracy.
Explain, in their own words, why direction is the key difference between scalars and vectors.
Represent a vector quantity using an arrow diagram, showing both magnitude and direction.

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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.6 - Distinguish scalars from vectors (qualitative treatment)
Suggested placement: Semester 1, Week 5 (Week 5 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)

Collaborative learning: Let learners find out the differences between scalars and vectors and let them in mixed-ability groups and categorise velocity, acceleration, mass, length, time, weight, energy, power and force into scalars and vectors.
Encourage self-awareness and personal growth by fostering an environment where learners feel comfortable sharing their reflections and experiences.
Assessment (1.1.1.AS.6). The document marks these depth-of-knowledge levels for this indicator: Level 1 Recall.
Teaching and Learning Resources:
- Meter rule
- Protractor
- Electronic balance
- Vernier calliper and
- Micrometer screw gauge