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Moyer, Richard H.; Everett, Susan A. – Science Scope, 2011
Plastic baggies, especially the sealable variety, seem to be a ubiquitous part of human culture. The zipper-type seal on plastic baggies is an example of an unappreciated engineering accomplishment that is relevant to everyday life. In fact, the challenge of fastening two pieces together probably dates back to the making of tools and clothing by…
Descriptors: Plastics, Middle School Students, Science Instruction, Science Education