Dynamics · SHS2 Physics

Lesson notes

Learning Objectives

Indicator: 2.1.4.LI.1 - Identify some effects and applications of friction.

By the end of the lesson, learners can:

State the meaning of friction as a force that opposes relative motion between two surfaces in contact.
Distinguish between static friction and dynamic (kinetic) friction, giving at least one example of each.
Identify at least three effects of friction in everyday situations, including both useful and harmful effects.
Describe at least three practical applications of friction in daily life and technology, explaining how friction is either increased or reduced.
Discuss at least two factors that affect the size of the frictional force between two surfaces.

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Curriculum details

Strand: Mechanics and Matter (Strand 1)
Sub-strand: Dynamics (1.4)
Content standard: 2.1.4.CS.1 - Demonstrate knowledge and understanding of friction. 2.1.4.LO.1 Explain how friction affects our daily life.
Indicator: 2.1.4.LI.1 - Identify some effects and applications of friction.
Suggested placement: Semester 1, Week 11 (Week 11 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. 105

Exemplars (from the NaCCA curriculum)

Collaborative learning:
- Let learners watch videos and brainstorm to bring out the meaning of friction and how it affects daily life.
- Let learners distinguish between static and dynamic friction.
- Let learners discuss the factors that affect friction.
Recognise diverse talents and perspectives.
Assessment (2.1.4.AS.1). The document marks these depth-of-knowledge levels for this indicator: Level 1 Recall; Level 2 Skills of conceptual understanding.
Teaching and Learning Resources:
- Spring balance
- Blocks of wood
- Electronic
- Wooden/plastic/metallic designing horizontal balance * Powder boards for * oil/grease inclined planes and planes,