Force and Motion · JHS1 Science

Lesson notes

Learning Objectives

Indicator: B7.4.4.2.2 - Describe the types and functions of levers.

By the end of the lesson, learners can:

Name the three classes of levers (first, second and third class) and describe the general function of each class.
Identify the fulcrum, effort and load in diagrams and in real objects from their surroundings.
Classify everyday tools and objects into first, second or third class levers with reasons.
Demonstrate how the arrangement of fulcrum, effort and load in each class of lever makes work easier.
Communicate their understanding by explaining to a partner how a chosen Ghanaian tool works as a lever.

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Curriculum details

Strand: Forces and Energy (Strand 4)
Sub-strand: Force and Motion (4.4)
Content standard: B7.4.4.2 - Recognise some simple machines, and show understanding of their efficiency in doing work.
Indicator: B7.4.4.2.2 - Describe the types and functions of levers.
Suggested placement: Term 3, Week 5 (Week 29 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. 39
Transcribed from the official NaCCA publication. Check this page against the source.

Exemplars (from the NaCCA curriculum)

1. Name the types of levers and explain their general functions.
2. Classify levers into first, second and third classes and demonstrate how the principals involved in each class make work easier in everyday life.