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Water Clocks
Source: National Institute of Standards and Technology Physics Laboratory Water clocks were among the earliest timekeepers that didn't depend on the observation of celestial bodies. One of…Guardians and Wards
The Question: When a person has been declared incompetent and the court appoints someone to handle their financial and physical affairs, what is that person…What Happened in/on ___?
Homework Center – Frequently Asked Questions What Happened in/on ___? Where can I find a list of important events from a year or decade in history? How do I find out what happened on my…Geometry: Calculating Areas
Calculating AreasGeometryPutting Quadrilaterals in the ForefrontProperties of All QuadrilateralsProperties of TrapezoidsLet's All Fly a Kite!Properties of ParallelogramsThe Most Popular…2022 Winter Olympics: Seven New Events
New events offer more variety at the Games Related Links 2022 Winter Olympics Memorable Olympic Moments Birth of the Modern Olympics Encyclopedia: Ancient Olympics Four years ago, the…Bibliography
Apologies for War Bibliography The following are the oldest Chinese treatises on war, after Sun Tzu. The notes on each have been drawn principally from the SSU K`U CH`UAN SHU CHIEN MING MU LU,…Geometry: The Pythagorean Theorem
The Pythagorean TheoremGeometryOpening Doors with Similar TrianglesThe Pythagorean TheoremParallel Segments and Segment ProportionsThree Famous Triangles Now that you know how to show that two…Sun Tzu on the Art of War: Introduction - Bibliography
Introduction Apologies for War Footnotes Bibliography The following are the oldest Chinese treatises on war, after Sun Tzu. The notes on each have been drawn principally from the…Leap Year 101
Why and when we have leap years Rules for Determining a Leap Year 1. Most years that can be divided evenly by 4 are leap years. (For example, 2016 divided by 4 = 504: Leap year!) 2. Exception:…Brewer's: Era
A series of years beginning from some epoch or starting-point, as: THE MUNDANE ERA, or the number of years between the Creation and the Nativity: According to the modern Greek Calendar 7,…Trending
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