Glass		National Glass Association – The History of Glass Return to top
Crayons		How are Crayola Crayons Made History and Development of Crayons How Stuff Works – Making of Crayons and Markers Return to top
Paper		Paper University – All_about_Paper From Plant to Pulp – How is Paper Made Paper and Glass Paperlinx – About Paper through the Ages Return to top
Pencil		Pencils How are Cedar Pencils Made Pencil Facts How are Pencils Made Pencils and Pencil Lead Step-by-Step – How is a Pencil Made Return to top
Gold		San Francisco Museum From Open Pit to Ring History of Gold Return to top
Light bulb		Invention of the Light Bulb History of Incandescent Bulbs How Light Bulbs Work Electric Lights Before Edison The Story of the Light Bulb Better Light Bulbs Return to top
Coins		U.S. Mint – How are coins made? U.S. Mint – Coin Production U.S. Mint – Fact sheets U.S. Mint – Minting Process Revealed Dollars & Cents Money Museum History of Money Return to top
Paper Money		Fundamentals about US Money Money_Museum Face of U.S .Currency History of Money How Stuff Works – Why Doesn’t paper money disintegate when it gets washed in the washing machine? American Currency Exhibit Color of Money Money Factory Return to top
Concrete and cement		How is Portland Cement Made A Virtual Tour of How Cement is Made Concrete basics How is Cement Made Making Cement Return to top
Toothpaste		What are toothpaste ingredients Toothbrush Express – Tooth brush history Save Your Smile – A Brief History Toothpaste World -- History Return to top
Computer		How Do Computers Work Computers and How they Work Computers
Books		Book Publishing Making a Book Return to top
Plastic		American Plastic Council How Are Plastics Made? Ask a Scientist -- How is Plastic Made Timeline of Plastic and More Hands on Plastics What is Plastic Return to top

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