Use The Properties of Materials Whether They Are Useful or Harmful - Handouts

USE THE PROPERTIES OF MATERIALS WHETHER THEY ARE USEFUL
OR HARMFUL
Intended Learning Outcome(s):
At the end of the lesson, the learners are expected to:
a. Identify some properties of materials found at home or in
school.
b. Classify properties of materials as to their uses whether
useful or harmful.
c. Use materials properly according to how useful or harmful it
is.
Time Frame: 1 hour
Materials Needed: Powerpoint presentation, Videos, Pictures
Concept:
What is Matter?
Matter is anything that occupies space and has mass. Everything around
us. Like tress, bicycle, street lights, buildngs and houses and others. It can
take many forms and has many of properties.
Matter is made up of different materials.
Materials from Home Materials from School
What are materials?
A material is a physicl substance use to make things.
Categories:
Metals
- A metal is a material that, when freshly prepared, polished, or fractured,

shows a lustrous appearance, and conducts electricity and heat relatively
well.
Plastics
- Plastics are a group of materials, either synthetic or naturally occurring,
that may be shaped when soft and then hardened to retain the given shape.
Plastics are polymers. A polymer is a substance made of many repeating
units.
Ceramics
- A ceramic is an inorganic non-metallic solid made up of either metal or non-
metal compounds that have been shaped and then hardened by heating to
high temperatures. In general, they are hard, corrosion-resistant and
brittle.
Glass
- Glass is made from natural and abundant raw materials (sand, soda ash
and limestone) that are melted at very high temperature to form a new
material: glass.
Fibres
- Fibres are thread-like structures that are long, thin and flexible. These
may be spun into yarns and then made into fabrics. There can be different
types of fibres. On the basis of their origin, fibres are classified as natural
fibres and synthetic fibres.
Rubber
- Rubber is an elastic material that can be produced naturally from various
plant sources or synthetically through a variety of chemical processes.
* The clothes you are wearing are made from fibres.
* The chair you are sitting on is made from plastic.
* The windows in the school or at home are made from glass.
> Can you see any other other examples around you?
Materials have different properties and characteristics depending on
what they are use for:
* Some materials are hard, others are soft.
* Some are strong, others are weak.
List of Properties
Properties of Materials found in products we use at home and in school.
1. Shiny - it reflects light.
2. Strong - it won’t break easily.
3. Flexible - it can be bent easily without breaking.
4. Light - it doesn’t weigh much.
5. Heavy - it weighs a lot.
6. Hard - something that can’t be bent easily.
7. Brittle - it is hard but will break easily.
8. Malleable - it can be shaped easily.
9. Transparent - something you can see through.
10. Translucent - something you can partially see through.
11. Opaque - something you cannot see through.

12. Conductor - it allows heat or electricity to pass through.
13. Insulator - it doesn’t allow heat or electricity to pas through.
14. Insulator - it doesn’t allow heator electricity to pass through.
Can you think of materials you usually use everyday at home?
* Some materials have useful properties, other materials can also be
harmful.
A material is USEFUL if it can be beneficial to humans or the environment.
For example :
A water is very useful material that can be used to mix different
substances.
Other examples:
Bag Pillow
Dress Toy car
A material is HARMFUL if there is more than harm than good that can be
obtain from it.
For example:
Batteries can provide energy to different kinds of equipment but the
contents of battery is harmful.

Other examples:
Shattered Glass bottle Scissors
Pesticides Paint
Guidelines in handling, storing and disposing harmful materials:
> They must have separate containers for
disposal.
> They must have proper labels and should be out of reach for children.
> They must not touched with bare hands. Gloves should be used when
possible.
> Corrosive chemicals must not be flushed down the sinks or toilet.
> Flammable materials such as thinner and fire crackers must be stored
in acool and dry place far from any flame sources.
> Always read and follow the instructions of a product before using it.

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USE THE PROPERTIES OF MATERIALS WHETHER THEY ARE USEFUL

Intended Learning Outcome(s):

At the end of the lesson, the learners are expected to:

a. Identify some properties of materials found at home or in

b. Classify properties of materials as to their uses whether

c. Use materials properly according to how useful or harmful it

Time Frame: 1 hour

Materials Needed: Powerpoint presentation, Videos, Pictures

take many forms and has many of properties.

Matter is made up of different materials.

Materials from Home Materials from School

What are materials?

A material is a physicl substance use to make things.

- A metal is a material that, when freshly prepared, polished, or fractured,

- Plastics are a group of materials, either synthetic or naturally occurring,

Plastics are polymers. A polymer is a substance made of many repeating

- A ceramic is an inorganic non-metallic solid made up of either metal or non-

metal compounds that have been shaped and then hardened by heating to

high temperatures. In general, they are hard, corrosion-resistant and

fibres and synthetic fibres.

plant sources or synthetically through a variety of chemical processes.

* The clothes you are wearing are made from fibres.

* The chair you are sitting on is made from plastic.

* The windows in the school or at home are made from glass.

Materials have different properties and characteristics depending on

what they are use for:

* Some materials are hard, others are soft.

* Some are strong, others are weak.

Properties of Materials found in products we use at home and in school.

1. Shiny - it reflects light.

2. Strong - it won’t break easily.

3. Flexible - it can be bent easily without breaking.

4. Light - it doesn’t weigh much.

5. Heavy - it weighs a lot.

6. Hard - something that can’t be bent easily.

7. Brittle - it is hard but will break easily.

8. Malleable - it can be shaped easily.

9. Transparent - something you can see through.

10. Translucent - something you can partially see through.

11. Opaque - something you cannot see through.

13. Insulator - it doesn’t allow heat or electricity to pas through.

14. Insulator - it doesn’t allow heator electricity to pass through.

Can you think of materials you usually use everyday at home?

* Some materials have useful properties, other materials can also be

A material is USEFUL if it can be beneficial to humans or the environment.

A water is very useful material that can be used to mix different

Dress Toy car

obtain from it.

Batteries can provide energy to different kinds of equipment but the

contents of battery is harmful.

Shattered Glass bottle Scissors

Guidelines in handling, storing and disposing harmful materials:

> They must have separate containers for

in acool and dry place far from any flame sources.

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