SHS3 General Science · Semester 2 Week 3: Forces Acting on Substances and Mechanisms

Lesson notes

Learning Objectives

Indicator: 3.3.2.LI.1 - Identify different types of forces and their daily applications.

By the end of the lesson, learners can:

Classify forces into contact and non-contact forces using everyday examples.
Describe frictional force, fluid friction and the factors that influence them.
Demonstrate, through practical activity, how friction can be increased or reduced.
Apply knowledge of forces to explain the operation of at least two simple machines or everyday tools.
Present and defend findings on the effects and reduction of friction using appropriate scientific language.

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Curriculum details

Strand: Vigour Behind Life (Strand 3)
Sub-strand: Forces Acting on Substances and Mechanisms (3.2)
Content standard: 3.3.2.CS.1 - Recognise the various forms of forces and their effects on motion. 3.3.2.LO.1 Explain the concept of momentum and its application.
Indicator: 3.3.2.LI.1 - Identify different types of forces and their daily applications.
Suggested placement: Semester 2, Week 3 (Week 23 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:
- Use concept maps to explain different types of forces.
- Using 3E learning model, let learners engage, explore and explain the applications of forces. NB: Emphasise frictional forces, factors influencing fluid friction and increase or decrease of friction.
- Engage learners to discuss frictional force its effects and how to reduce it.
Teaching and Learning Resources:
- Charts, pictures, videos, simulations and realia of simple machines.
- Simulations/videos, and pictures.
Assessment (3.3.2.AS.1). The document marks these depth-of-knowledge levels for this indicator: Level 4 Extended critical thinking and reasoning.