JHS3 Science · Term 2 Week 12: Force and Motion

Lesson notes

Learning Objectives

Indicator: B9.4.4.1.1 - Explain the concept of pressure and show how pressure relates to force; perform activities that work on the principle of pressure in the daily lives of humans.

By the end of the lesson, learners can:

Define pressure as the force acting perpendicularly on a unit area of a surface, and state its formula (Pressure = Force ÷ Area).
Explain the relationship between pressure and force, and between pressure and area, using the formula and simple examples.
Demonstrate the action of pressure through at least two hands-on activities, such as using a drinking straw or pressing a pointed object into a surface.
Identify and describe at least three everyday situations in Ghana where pressure is applied, such as pumping car tyres, filling balloons, or water jets at washing bays.
Apply the concept of pressure to explain why some tools are designed with sharp edges or wide bases.

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Curriculum details

Strand: Forces and Energy (Strand 4)
Sub-strand: Force and Motion (4.4)
Content standard: B9.4.4.1 - Demonstrate understanding of the concept of pressure and explain how pressure acts in everyday life
Indicator: B9.4.4.1.1 - Explain the concept of pressure and show how pressure relates to force; perform activities that work on the principle of pressure in the daily lives of humans.
Suggested placement: Term 2, Week 12 (Week 24 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: Science, Common Core Programme (JHS1-JHS3), 2023, p. 111
Transcribed from the official NaCCA publication. Check this page against the source.

Exemplars (from the NaCCA curriculum)

1. Demonstrate the action of pressure through a number of activities such as using drinking straw, pumping car tyres, filling of balloons, water jets at washing bays, etc. to understand the concept of pressure.
2. Describe the relationship between pressure and force and discuss the application of pressure in everyday life.