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EKLAVYA SCHOOL, AHMEDABAD
|Subject: Science||Week No.:|
|Topic: Air||Period No.:|
Objective / Contents:
Children will understand that air is very essential for the survival of human beings.
learns about different constituents of air by knowing that air is mixture.
2. Proves that
air contains Co2
that air is essential for the life of all living beings.
that air is necessary for combustion.
that air is everywhere and air has weight.
will be asked to take deep breath and close their eyes. As they open their eyes,
one empty glass will be shown to them. They will be asked, “ Is there anything
in this glass?” They will be informed that air is there in the glass. Air is
everywhere although it is not visible.
prove that air is everywhere, one small experiment will be conducted. A crumbled
paper will be kept at the bottom of the glass. The glass will be inverted in the
bucket of water. After a minute, glass will be take and the paper will be shown.
The paper won’t turn wet. The reason for this will be discussed.
The scientific reason
behind the paper not getting wet is presence of the air in the glass which
unables the water to enter into the glass. Hence the paper doesn’t turn wet.
2: Bubbles will be blown in the class. They
would be asked as to what helped in formation of bubbles. A wind wane, kite and
whistle will be shown. Importance of windmill will be discussed. More examples
from daily life will be discussed like tyres of vehicles, wet clothes getting
dried up, etc.
3: Air is
needed for combustion will be explained with a simple experiment. On a lighted
candle, a glass will be inverted. After sometime, the candle gets extinguished.
The reasons for this will be discussed. Here the candle got extinguished as
oxygen present in the glass was used up and after some time there was absence of
oxygen in the glass. As candle needs oxygen to burn it blew off after some time.
Example of chulha having gaps between firewood's will be told.
beings need oxygen, so oxygen is one of the constituents of air. Which are the
other constituents of air will be asked? The chart will be shown.
5: A simple experiment will be shown which
will prove that oxygen is present in the air. A candle will be lighted in a
dish, water will be poured in it and a glass will be inverted. Candle will blow
off and water will come in the glass. Here the water comes in as the air
pressure is high outside the glass compared to inside the glass and the vacuum
is created inside the glass so the water moves in to fill up the vacuum.
time remains: Difference between air and
wind will be told, i.e., wind is air in motion. How is the velocity of wind
measured will be explained.
A glass, crumbled paper, water, bowl, wind wane, kite, bubble- instrument (liquid soap & wire), candle, a dish and worksheet.
Assignment: Worksheet will be given to students, which is based on the concept that air has weight. The worksheet compels students to perform the experiment and then solve the worksheet by writing their observations.
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