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Who Invented the Passenger Elevator?
The passenger elevator was invented by a company called OTIS using hydraulic technology to navigate through large skyscrapers. Find out how this invention affected the development of cities with...
Who Invented the Alphabet?
The alphabet was developed over many years into several languages, some containing a handful of characters and others including thousands. Find out how the alphabet developed with answers from an...
Who Invented Chocolate?
Chocolate was not invented, but it was first cultivated by the Mayans and Aztecs who created a special drink from the cocoa bean. Find out how chocolate came to be one of the most sought-after...
Who Invented the Mailbox?
The mailbox was invented in the mid 1800s in the United States when mailmen began to deliver mail door to door. Find out how the postage service has developed with answers from an experienced...
Who Invented Refrigerated Railroad Cars?
The refrigerated railroad cars were invented by Jonas Wilder to ship butter from one place to another. Discover the history of transported refrigeration with answers from an experienced teacher in...
What Did People Use to Write Before Pencils Were Invented?
Before pencils were invented, people used a wide variety of materials to write, such as paint, ink, charcoal, ashes, dirt and slate. Find out how humans have made marks in the past with answers...
Who Invented the Staple?
The staple was originally invented during the reign of King Louis XIV, who had his name inscribed on each staple. Find out when common staples were more widely used with answers from an...
Who Invented the 1st Electric Refrigerator?
The first electric refrigerator was invented by General Motors Company in the early 1900s, but more primitive models were developed in the early 1800s by Thomas Moore. Discover the origins of the...
Who Invented the Protractor?
The protractor was invented several thousand years before a more complex version was developed in the 1800s. Find out who invented the protractor with tips from a mathematics instructor in this...
Who Invented the Ruler?
The ruler was invented by different civilizations of different time periods. Discover the origin of the ruler with tips from a mathematics instructor in this free video on math history.
Who Invented Fractions?
Fractions were invented more than likely by the Egyptians to organize taxes on land. Find out who invented fractions with tips from a mathematics instructor in this free video on math history.
Who Invented Geometry?
Geometry was invented or formalized by the ancient Greeks about 4,000 years ago. Find out who invented geometry with tips from a mathematics instructor in this free video on math history.
Who Invented Trigonometry?
Trigonometry was invented thousands of years before it was formalized in 500 A.D. in India. Find out who invented trigonometry with tips from a mathematics instructor in this free video on math...
Who Invented Multiplication?
Multiplication was invented by the Babylonians thousands of years ago. Find out who invented multiplication with tips from a mathematics instructor in this free video on math history.
Who Invented Addition?
Addition was invented and formalized mainly by the Chinese more than 6,000 years ago. Find out who invented addition with tips from a mathematics instructor in this free video on math history.
Who Invented Subtraction?
Subtraction was invented in the same way as addition and counting, in that it has always existed. Find out who invented subtraction with tips from a mathematics instructor in this free video on...
Who Invented Numbers?
Numbers were invented at the dawn of time, and number systems were developed through ancient civilizations. Find out who invented numbers with tips from a mathematics instructor in this free video...
Who Invented the Number System?
Number systems are invented and reinvented over time by different civilizations. Learn about the number system with tips from a mathematics instructor in this free video on math history.
Who Invented the Number Zero?
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 a mathematics instructor in this free...
Who Invented the Calculator?
The calculator was invented by the Chinese in the form of an abacus. Learn who invented the calculator with tips from a mathematics instructor in this free video on math history.
Who Invented Calculus?
Calculus was invented by either Newton or Leibnitz in the late 17th century. Find out who invented calculus with tips from a mathematics instructor in this free video on math history.
Who Invented Decimals?
Decimals were invented by the Elanites in Persia about 6,000 years ago. Find out who invented decimals with tips from a mathematics instructor in this free video on math history.
Who Invented Division?
Division was invented thousands of years ago, but was formalized by the ancient Egyptians. Find out who invented division with tips from a mathematics instructor in this free video on math history.
Who Invented Math?
To learn who invented math, first one must define what math is exactly. Find out who invented math with tips from a mathematics instructor in this free video on math history.
Who Invented Algebra?
Algebra was invented by the Babylonians about 4,000 years ago. Find out who invented algebra with tips from a mathematics instructor in this free video on math history.
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