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  2. Metaformic Theory - Wikipedia

    en.wikipedia.org/wiki/Metaformic_Theory

    The earliest form of counting "artifacts are menstrual calendar bones, notched with correct lunar cycles, tabulating pregnancy and menstruation." [ 10 ] The prehistoric calendar bones include the Ishango bone , the most well known, which was discovered on the shore of a lake in Zaire, Africa, and represented a six-month lunar calendar.

  3. Calendar-based contraceptive methods - Wikipedia

    en.wikipedia.org/wiki/Calendar-based...

    The World Health Organization considers the rhythm method to be a specific type of calendar-based method, and calendar-based methods to be only one form of fertility awareness. [2] More effective than calendar-based methods, systems of fertility awareness that track basal body temperature, cervical mucus, or both, are known as symptoms-based ...

  4. Print an AOL Calendar

    help.aol.com/articles/print-an-aol-calendar

    Using AOL Calendar lets you keep track of your schedule with just a few clicks of a mouse. While accessing your calendar online gives you instant access to appointments and events, sometimes a physical copy of your calendar is needed. To print your calendar, just use the print functionality built into your browser.

  5. Menstrual cycle - Wikipedia

    en.wikipedia.org/wiki/Menstrual_cycle

    Menstrual cycle The menstrual cycle is a series of natural changes in hormone production and the structures of the uterus and ovaries of the female reproductive system that makes pregnancy possible. The ovarian cycle controls the production and release of eggs and the cyclic release of estrogen and progesterone. The uterine cycle governs the preparation and maintenance of the lining of the ...

  6. CycleBeads - Wikipedia

    en.wikipedia.org/wiki/CycleBeads

    CycleBeads, a color-coded string of beads that represents the days of a woman's cycle, helps an individual use the Standard Days Method, by helping her track her cycle days. Starting the first day of her period, she moves a band to the red bead then to a new bead every day.

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