How To Make Simple Lung Model with Balloon

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Here is a quick demonstration how lungs work with a plastic bottle and two balloons I have prepared for Alex. When we pull knotted balloon, more space inside the bottle is created. To fill that space more air is sucked in thru the red balloon inflating it in the process. The opposite happens when we release green balloon and push it inside ===================================================== ===================================================== My main topics include: unique, creative, educational toys for kids, kids science experiments, fun educational activities, must have products for children, kids fashion, dad’s lifestyle, children friendly places to go

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