Students of stage 6 Cambridge wing DAV
Pushpanjali in group of six students prepared working model of lungs in bottle.
Students brought plastic bottle, balloon,
straw and collectively prepared the model. They quickly related the model to
explain working of lungs. They explained merits of the model by blowing balloons
with air during breathing in and deflating balloon during breathing out when
diaphragm balloon is pulled down. They also explained disadvantages of model
and tell that real lung are spongy where as model lungs are hollow. They
reinforce skills, refine understanding through group discussing and explanation.
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