Inventions & Inventors
History of The Metric system
People all over the world use kilograms, centimeters , square meters, liters, and Celsius (C). These are all ways to measure things. Th...
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Showing posts with label Inventions & Inventors. Show all posts
Showing posts with label Inventions & Inventors. Show all posts
Inventions & Inventors
History of Umbrellas
The umbrella is a very ordinary object . It keeps the rain and the sun off people. Most umbrellas fold up, so it is easy to carry them....
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Inventions & Inventors
History of Pencils and Pens
No one knows who invented pencils or when it happened. A Swiss describe a pencil in a book in 1565. He said it was a piece of wo...
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Inventions & Inventors
History of The Postage Stamp
Before the invention of the postage stamp, it was difficult to send a letter to another country. The sender paid for the letter to ...
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Inventions & Inventors
History of The Zipper
The zipper is a wonderful invention. How did people ever live without zippers? They are very common. so we forget that they are wonde...
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Before the invention of the postage stamp, it was difficult to send a letter to another country. The sender paid for the letter to ... -
People all over the world use kilograms, centimeters , square meters, liters, and Celsius (C). These are all ways to measure things. Th... -
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In the 1880s, people drank john Pemberton’s tonic to cure headaches. It wasn’t very popular drink, and he sold only about a dozen bo...
