Third Term Identification of Materials Primary 5

Class:  Basic 5

Subject :Basic science and technology

Term : 3rd Term

 

Week   2

 

Previous Topics : The  have been taught various materials that are needed for soap making

 

Content     

Materials are substances that are used to produce other materials or products that are very useful to us. These material  may be wood ,plastic or metals and they can be used as raw materials for other products.

 

A material is a substance or mixture of substances that constitutes an object. Materials can be pure or impure, living or non-living matter.

 

 

Materials can be classified based on their physical and chemical properties, or on their geographical origin or biological function. Materials are resources used in making products of technology.

 

TYPES OF MATERIALS

 

1. Wood materials

 

2. Plastic materials

 

3. Metal materials

 

EXAMPLES OF PRODUCTS MADE FROM WOOD MATERIALS

 

Products made from wood materials are bow and arrow, shelter, furniture, doors and windows bridges, electric poles etc.

 

EXAMPLES OF PRODUCTS MADE FROM PLASTIC MATERIALS

 

Products made from plastic materials include the following: rulers, toothbrushes, electronics, shirts and blouses buttons, plastic pipes, buckets etc

 

EXAMPLES OF PRODUCTS MADE FROM METAL MATERIALS

 

Products made from metal materials are pipes, roofing sheets, cylinder, pots, spoons, containers, bolts and nuts etc

 

USES OF WOOD MATERIALS

 

1. Wood materials are used for home construction. Domestic constructions made out of wood were popular many years ago and are still widely used.

 

2. It is used for making fence and decorating gardens

 

3. It is used for making utensils

 

4. It is used for creating art

 

5. It is used for making musical instruments

 

6. It is used for making sports equipment and toys

 

What are raw materials?

Raw materials are materials that are used as inputs to produce other materials

Most objects in our homes are products that are produced with raw materials

Let us look around and say the MAJOR  raw materials that are used to produce lost objects at home and the ones around us

1. Bed = wood, metal or plastic
2. Chair= wood, metal or plastic
3. Table = wood, metal or plastic
4. Books = wood
5. Matches =wood
6. Door = wood, metal
7. Gate = metal
8. Television = plastic
9. Radio = plastic
10. Telephone = plastic

 

Presentation ; The topic is presented step by step

Step 1 ; the class teacher revises the previous topics

Step 2 ;the class teacher introduces the new topic

Step 3 ; he allows the pupils to give their own examples and he corrects the pupils when the needs arise

 

Evaluation

 

1. What are raw materials
2. Mention four products that are produced with.a

a) metal

{b) wood

(c) plastic

Define materials

 

2. Identify the materials used in technology

 

3. List types of materials

 

4. State what materials are used for

 

1 .Define materials

2. Identify the materials used in technology

3. List types of materials

4. State what materials are used for