JHS2 Career Technology · Term 1 Week 6: Resistant Materials

Lesson notes

Learning Objectives

Indicator: B8.2.2.1.1 - Explain the basic properties of resistant materials

By the end of the lesson, learners can:

Define resistant materials and give at least three examples of metals, woods, and plastics commonly used in Ghana.
Explain at least four physical properties of resistant materials (density, fusibility, electrical conductivity, thermal conductivity) with simple examples.
Explain at least four working properties of resistant materials (strength, hardness, toughness, malleability, ductility, elasticity) and describe how each affects the use of the material.
Sort given materials into those with high or low density, good or poor conductivity, and high or low hardness, giving reasons for each choice.
Create a chart that organises the physical and working properties of resistant materials in a clear table format, using correct terminology.

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Curriculum details

Strand: Materials for Production (Strand 2)
Sub-strand: Resistant Materials (2.2)
Content standard: B8.2.2.1 - Demonstrate understanding of properties of resistant materials
Indicator: B8.2.2.1.1 - Explain the basic properties of resistant materials
Suggested placement: Term 1, Week 6 (Week 6 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: Career Technology, Common Core Programme (JHS1-JHS3), 2023, p. 48
Transcribed from the official NaCCA publication. Check this page against the source.

Exemplars (from the NaCCA curriculum)

1. Discuss the physical properties of resistant materials.
E.g., density, fusibility, electrical conductivity, thermal conductivity
2. Investigate the working properties of resistant materials;
E.g., strength, hardness, toughness, malleability, ductility, elasticity
3. Make a chart on the various properties of resistant materials.
E.g.
Physical Properties | Working Properties
Density Fusibility | Strength Hardness