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  2. Equation of time - Wikipedia

    en.wikipedia.org/wiki/Equation_of_time

    The United States Naval Observatory states "the Equation of Time is the difference apparent solar time minus mean solar time ", i.e. if the sun is ahead of the clock the sign is positive, and if the clock is ahead of the sun the sign is negative. [6] [7] The equation of time is shown in the upper graph above for a period of slightly more than a ...

  3. Grade skipping - Wikipedia

    en.wikipedia.org/wiki/Grade_skipping

    Grade skipping. Grade skipping is a form of academic acceleration, [1] often used for academically talented students, that enables the student to skip entirely the curriculum of one or more years of school. Grade skipping allows students to learn at an appropriate level for their cognitive abilities, and is normally seen in schools that group ...

  4. Doomsday rule - Wikipedia

    en.wikipedia.org/wiki/Doomsday_rule

    The Doomsday rule, Doomsday algorithm or Doomsday method is an algorithm of determination of the day of the week for a given date. It provides a perpetual calendar because the Gregorian calendar moves in cycles of 400 years. The algorithm for mental calculation was devised by John Conway in 1973, [1] [2] drawing inspiration from Lewis Carroll ...

  5. Why do we have a leap year? What would happen if we didn’t ...

    www.aol.com/news/why-leap-happen-didn-t...

    Every four years (typically), a leap year occurs in February — making it 29 days long instead of the usual 28. Bob Craddock, ... “If you do the math, that five hours, 48 minutes and 56 seconds ...

  6. Is 2024 a leap year? When is leap day, and why is it needed?

    www.aol.com/2024-leap-leap-day-why-204215160.html

    A leap year is a year in which an extra day, Feb. 29, is added to the calendar. ... "Some simple math will show that over four years the difference between the calendar years and the sidereal year ...

  7. The Learning Company - Wikipedia

    en.wikipedia.org/wiki/The_Learning_Company

    The Learning Company ( TLC) was an educational software company founded in 1980 in Palo Alto, California and headquartered in Fremont, California. The company produced a grade-based line of learning software, edutainment games, and productivity tools. Its titles included the flagship series Reader Rabbit, for preschoolers through second graders ...

  8. Leap Day birthday math: How old would you be if you were born ...

    www.aol.com/leap-day-birthday-math-old-024548677...

    If you were born on Leap Day 1924, you would be 100 years old, or 25 in Leap Day years. The year must be evenly divisible by 4. If the year can be evenly divided by 100, it is not a leap year ...

  9. JumpStart 1st Grade - Wikipedia

    en.wikipedia.org/wiki/JumpStart_1st_Grade

    JumpStart 1st Grade (known as Jump Ahead Year 1 in the United Kingdom) is a personal computer game created by Knowledge Adventure in 1995 intended to teach a first grade curriculum. It was reissued in 1999 with new box art, was updated significantly in 2000, and was replaced with JumpStart Advanced 1st Grade in 2002, which was later replaced ...

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