During last two decades the
author has been organising various activities for students.
Organising a science club was the most interesting and playful
activity. I have spared neither labour nor expense to render the
activities of our science club instructive and amusing to the young
as well as to my co-workers. Here is open picture of my approach
towards (young students) 'how and why', so than one can certainly
feel inspired.
There were at least four
thousand questions asked by the students of our science club, on
science. It is not mere collection of questions in a so called
question box hanging on a wall. All question cover widespread fields
of scientific knowledge. Are these questions abruptly asked by the
students? No. There was a very-very systematic and planned
background, in this short account, I intend to deal with the
background of some sections of the questions.
Creation of proper situation
through thoughtful plan
Science projects and other
such activities can be carried out very profitably in the science
clubs. I and my co-workers had undertaken various activities like
preparation of scientific charts, instruments, making informative
wall papers and arranging lectures on scientific subjects. In
addition to these activities we had planned and executed different
educational observational excursions. Here are some examples. For
astronomical purpose we had our excursions at dawn and at night, for
the observation of birds we had gone to the water side at Someshwar;
we had been to a flower farm near Agra Road for the observation of
flower plants and behaviour of butterflies. For rock collection, we
had gone to the hilly area near Bhagur and at Chamber caves. This
list can be further extended. We had given a specific plan to our
students as home work during holidays. Thus our students had their
first step into the various fields of science like astronomy,
ornithology, home science, physics, biology, etc. These planned and
systematic excursions created appropriate setting around the
students and had thus led them towards 'how and why'?. Unless proper
situation is there you can't expect desired provocations.
Astronomical observations
It is useless to make
astronomical observations in city areas. It is because of glare of
electric street lighting and smoky atmosphere. For this reason, we
had our excursions for astronomical observations (both naked eye and
telescopic) in a favourable countryside two kilometers away from
Nasik city.
We had kept limited
objectives in mind while making this plan. We carried out only one
unit at a time. Here are some details:
1. Observing the moon.
2. Observing planets.
3. Observing stars.
4. Observing
constellations.
5. Observing meteors.
6. Observing solar and
lunar eclipses.
While walking during the act
of observation, some of the students asked, "Why does the moon
follow us when we walk?".
Pat followed the answer –
"Look at the moon. The distance of the moon from the earth is quite
great. So as we move along the angle at which we see the moon,
hardly changes. In fact we could go along a straight line for
kilometers and the angle at which we would see the moon would still
be the same. And as we notice everything else flying past, we get
that feeling of the moon 'following us'.
The students' curiosity was
fulfilled and they were enlightened. When we climbed the hill and
observed the vast horizon, here was another question, "How big is
univserse?" And then questions after questions, one by one.
"If the moon is round, why
isn't so all the time? What are the dark areas on the moon's face?"
"Why does the moon always
present the same face to the earth?
"How big is the moon?
"How does the moon compare
with the sun for brightness?
"Why did man want to go to
the moon?"
While making telescopic
observations of the moon, questions arose :
"How many craters were there
on the moon?"
"What caused the moon's
craters?"
When we were observing the
moon, some students saw a wonderful object. A bright spot appeared
to move from the west horizon and as it passed nearly overhead it
suddenly faded.
Questions started flowing :
"What is this bright spot?"
It is an artificial
satellite. The man made moon.
"How did it disappear when
it passed nearly overhead?"
It passed into the earth's
shadow so it disappeared.
"How does a satellite stay
up there?"
"What keeps a satellite
circling earth?"
When I heard these
questions, I questioned them in return.
How does our moon stay up?
What keeps the moon circling
our earth?
The students were dumb
founded.
But, I had to explain them
the laws of motion, law of gravitation and principles behind
launching rockets, etc.
There was a never ending
flow of questions while focusing on plants, constellations, stars,
meteors, comets, etc.
Outdoor trip for bird
watching (ornithology)
We were going to Somewhare
for observation of birds in the afternoon. Some bullocks and cows
were running across the streets. Their tails were erected. One of
the students questioned.
"Why do bullocks and cows
erect their tails when they run?"
They erect their tails
because they can keep up their balance. It was rather hot now and we
went to the river side under a shady tree. We felt better.
"Why is it cool under the
tree shade?" A question spurted.
It is cool under this shady
tree because the over hanging branches screen off the rays of the
sun. As the rays of the sun are checked, the air beneath is being
not now heated by the earth, which is comparatively cool.
We sat on a rock near the
river, some ducks were toting on the water. A question again :
"Why could ducks dive under
water without getting wet?" We caught a duck and the students
observed its feathers covered with an oily secretion which has no
attraction for water and therefore repel it.
Students also observed fish,
crows, and tailor birds. Some one brought a typical nest of a tailor
bird. Students asked number of questions about the birds, fishes and
varied nests.
Some students had caught some insects. One
of them asked a very interesting question.
"How do insects breath?"
I told him to examine the
insect closely on the abdomen and showed him little openings. These
openings work as breathing organ.
When we returned home, it
was getting dark. We saw bats flying in the sky, students asked
question about them too.
"Can bats see in the dark?"
"How do bats see?"
I told the students about
the experiments of scientists on bats. I explained them the relation
between radar and bat. All were fully engrossed.
Novel home work for the
students
Before the commencement of
vacation, students were given a questionnaire. The questions were
familiar and related to the phenomena of home science . They were
prepared from the utility point of view. The project was divided
into groups. Each of the group submitted its own findings. Here are,
groupwise questions :
Group A
1. In what way do you keep
your house clean?
2. What ways do you follow
to clean different kinds of clothes.
3. How do you protect your
kitchen from cockroaches?
4. Which are the best
soaps available in the market with regard to lather formation and
ability to dislodge and hold dirt and soil clumps in suspension?
5. What is the most
suitable temperature for washing clothes?