What is Glass made of?

Who Smarted? - Educational Podcast for Kids - Podcast készítő Atomic Entertainment / Starglow Media

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 How was glass discovered? How is glass molded into so many things? Why is glass sometimes clear and sometimes colorful? For free home activities sign-up at www.WhoSmarted.com See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

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