Basic Science and Technology
Instructional Materials :
- Weather chart
- Wall charts
Previous Knowledge :
The pupils have been taught
Examples of Weather Conditions
in their previous lesson
Behavioural Objectives : At the end of the lesson, the pupils should be able to
- say what is air
- say what is wind
- say types of wind
Air is not only needed for respiration, it is also an important element for several other activities we carry out.
We need air to sail, to fill balloons, to fly aeroplanes, to make fire, to dry things, to pump vehicle tires etc.
Air is a conducting medium for sound: we can hear the sound of speech or noise because of air around us. It happens because air is a good sound conductor. Without air, we will not be able to hear anything and won’t be able to produce any sounds.
Air helps to dry things: (Moisture Balance) When the rain makes the ground to be wet, the air dries it up.
Air helps us to swim in water: When our lungs fill up with air, we can swim higher in the water.
Fire needs air to burn. Air in the tyre helps vehicles to move
What are the uses of Air?
Uses of Air
Air helps us to breathe Air us to hear sounds Air helps us to dry things
Air helps us to drive vehicles Air helps fire to burn
Air helps aeroplane to fly
Wind can be a mystery for kids. You know, they can’t see anything, but they feel wind blowing. SO, WHAT EXACTLY IS WIND?
Wind is moving air. It is the movement of large amount of air. Wind is the movement of air near the earth’s surface. WIND: It is the result of air moving around in the atmosphere.
Wind can be a gentle breeze or a strong gale.
When air flows over a warm surface, it heats up and rises. It will make cooler air to flow in. The flowing air is wind.
Wind is caused by differences in air pressure within our atmosphere.
The most powerful winds happen during storms called tornadoes, cyclone and hurricanes.
What is Wind?
Wind is air that is
Wind is when plenty air is moving. Wind can be gentle or very strong.
The topic is presented step by step
The class teacher revises the previous topics
He introduces the new topic
The class teacher allows the pupils to give their own examples and he corrects them when the needs arise
- What is air ?
- What is wind ?
- Does air help fire to burn ?
- Does air help car to move ?
- Does air helps fish to swim ?
Class teacher wraps up the lesson , gives a short note and goes round to mark