Lesson Notes By Weeks and Term v4 - SHS 1

ENGINEERING MATERIALS, TOOLS AND MACHINES

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Subject: Applied Technology

Class: SHS 1

Term: 2nd Term

Week: 7

Grade code: 1.4.2.LI.3

Strand code: 4

Sub-strand code: 1

Content standard code: 1.4.1.CS.1

Indicator code: 1.4.2.LI.3

Theme: METAL TECHNOLOGY

Subtheme: ENGINEERING MATERIALS, TOOLS AND MACHINES

Lesson Video

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Performance objectives

Define and give examples of ferrous and non-ferrous metals.
Discuss the properties and uses of different metals.
Identify non-metallic materials and their applications.
Analyze the importance of materials in everyday products.

Lesson summary

This lesson introduces the fundamental categories of materials used in engineering and everyday life. From the roofing sheets on our homes and the cooking pots (`dadesen`) in our kitchens to the cars and "tro-tros" on our roads, every product is made from a specific material chosen for its unique properties. Understanding these materials—why a nail is made of steel and a window frame of aluminium—is the first step to becoming a skilled technician, engineer, or innovator. This knowledge is essential for making, repairing, and designing things effectively. We will explore the main families of metals (ferrous and non-ferrous) and also look at important non-metallic materials like plastics.

Lesson notes

What are Engineering Materials?

Engineering materials are the "building blocks" used to create everything from simple tools to complex machines. They are chosen based on their properties, such as strength, weight, cost, and resistance to heat or rust. We can group them into three main categories: Metals, Polymers (Plastics), and Ceramics. Today, we focus on metals and plastics.

A. METALS

Metals are materials that are typically strong, dense, and good conductors of heat and electricity. The most important way to classify metals is based on whether or not they contain iron. Ferrous Metals

Evaluation guide

Explain ferrous and non -ferrous metals with engineering applications and state
the uses of non -metallic materials.
Project- based learning: Learners are guided to use the appropriate charts or samples of
items made of ferrous and non -ferrous metals to identify and fairly discuss the various