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Construction of Windmill(Wind energy):
First take four wooden card boards whose ends are flattened and the other ends are pointed.
Then join them together at the top with some glue.
Then make a hole not more than 1 cm or just make a pin sized hole and that will be the place for the fan.
Then take a plastic fan not of much weight and fix it with a wire,so that it moves smoothly.
And then finally place it on a card board large than its own size and place the model of windmill.
Then place the windmill in front of a table fan so that the blades of the fan move round.

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can u give anything else
I am sorry but I know this construction of working model only :/
Had you prepared this one? btw, nice model.
yes for my school science exhibition project just what I did
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