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The leak proof bag is a high interest activity to introduce your children to polymers, specifically a polymer called low-density polyethylene (LDPE). And if you don’t care to get into the nitty gritty of the science, it just makes for a really fun experience.

Who would have ever thought that a plastic bag, some water, and a few pencils would have adults screaming with fear? learn how to poke holes in a plastic baleak proof bag experimentg filled with water without spilling a drop.

Try a bit of science magic with this leak proof bag science trick! Simply push sharp pencils through a plastic bag containing water and watch in amazement.

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