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There are 14 videos in this category and 0 videos in 0 subcategories.
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Not Right For WatchKnowLearn
Ages: 10 - 18
145 Views:
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1, 2, 3, 4, 5, 6, 7, 8, 9... and 0. With just these ten symbols, we can write any rational number imaginable. But why these particular symbols? Why ten of them? And why do we arrange them the way we do? Alessandra King gives a brief history of numeri...cal systems. (05:07)
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January 28, 2017 at 10:29 AM
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Not Right For WatchKnowLearn
Ages: 14 - 18
106 Views:
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Would mathematics exist if people didn't? Did we create mathematical concepts to help us understand the world around us, or is math the native language of the universe itself? Jeff Dekofsky traces some famous arguments in this ancient and hotly debat...ed question. Lesson by Jeff Dekofsky, animation by The Tremendousness Collective. (05:10)
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March 14, 2017 at 01:05 PM
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Not Right For WatchKnowLearn
Ages: 12 - 18
4492 Views:
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The development of measuring systems is a great human accomplishment. The early Egyptians created a unit of length, the cubit, based on the human forearm. The English and others, used the human foot and grains of barley corn to measure length. The m...etric system started with an fascinating attempt to define the meter using time. The meter evolved through a number of incarnations many involving distances taken from the planet. Today the meter is defined using the speed of light. This definition relies on a reliable means for measuring time. Time and space have been joined in our current definition of the meter. (07:23)
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December 5, 2009 at 10:44 PM
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Not Right For WatchKnowLearn
Ages: 10 - 18
1900 Views:
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Animated movie on the development of numbers and how many civilizations used other methods of counting. (07:04)
November 23, 2010 at 03:32 PM
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Not Right For WatchKnowLearn
Ages: 12 - 18
2110 Views:
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Decimals were invented by the Elanites in Persia about 6,000 years ago. Find out who invented decimals in this interesting lecture which is done using a white board. Also discussed is a time line spanning many centuries and places. (02:20)
February 15, 2010 at 02:56 PM
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Not Right For WatchKnowLearn
Ages: 12 - 18
2134 Views:
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The number zero was invented in the last 1,000 years to form a transition between positive and negative numbers. Discover the origin of zero with tips from Steve Jones, who uses a white board to aide in his presentation. (01:21)
February 15, 2010 at 01:27 PM
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Not Right For WatchKnowLearn
Ages: 10 - 18
1805 Views:
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Number systems are invented and reinvented over time by different civilizations. In this video you will learn about these number systems and and their history. The instructor uses a white board to present this information. (02:38)
February 19, 2010 at 12:02 PM
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Not Right For WatchKnowLearn
Ages: 10 - 18
4788 Views:
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In this video a mathematics instructor explains that division was invented thousands of years ago, but was formalized by the ancient Egyptians. The mathematics instructor discusses who invented division and the division process. (02:20)
February 19, 2010 at 02:20 PM
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Not Right For WatchKnowLearn
Ages: 10 - 18
2337 Views:
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A mathematics instructor explains that the first people to use math were the ancient people of prehistory. Learn about the origin of math and who were the first people to use math. (02:16)
February 20, 2010 at 12:34 PM
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Not Right For WatchKnowLearn
Ages: 10 - 18
4590 Views:
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Learn about the history of fractions and who invented them. A mathematics instructors explains that more than likely fractions were invented by the Egyptians to organize taxes on land. (01:58)
February 20, 2010 at 01:36 PM
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