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  2. Multiplication table - Wikipedia

    en.wikipedia.org/wiki/Multiplication_table

    The oldest known multiplication tables were used by the Babylonians about 4000 years ago. [2] However, they used a base of 60. [2] The oldest known tables using a base of 10 are the Chinese decimal multiplication table on bamboo strips dating to about 305 BC, during China's Warring States period. [2] "Table of Pythagoras" on Napier's bones [3]

  3. List of recessions in the United States - Wikipedia

    en.wikipedia.org/wiki/List_of_recessions_in_the...

    The early 1980s are sometimes referred to as a "double-dip" or "W-shaped" recession. [40] [67] 1981–1982 recession: July 1981 – November 1982 1 year 4 months 1 year 10.8% (November 1982) −2.7% The Iranian Revolution sharply increased the price of oil around the world in 1979, causing the 1979 energy crisis.

  4. Early childhood education in the United States - Wikipedia

    en.wikipedia.org/wiki/Early_childhood_education...

    Over the years, the program has evolved and is a respected preschool aged program within many communities, working with children of all backgrounds and abilities. Since 2010, there has been a national push for state and federal policy to address the early years as a key component of public education.

  5. These are the best early Presidents' Day 2025 sales you can ...

    www.aol.com/lifestyle/these-are-the-best-early...

    We're tracking the best Presidents' Day sales you can shop early this year from all ... Table of contents: Top 10 early deals. ... my husband has this razor and I've used it more times than I can ...

  6. How do certificates of deposit work? Understanding CDs ... - AOL

    www.aol.com/finance/how-do-cds-work-220139365.html

    CD terms can range from three months to 10 years, ... Early withdrawal penalties ... the Federal Reserve's aggressive interest rate hikes and holds over the past year The Fed raised the fed funds ...

  7. Chronology of the universe - Wikipedia

    en.wikipedia.org/wiki/Chronology_of_the_universe

    Reionization might have started to happen as early as z = 16 (250 million years of cosmic time) and was mostly complete by around z = 9 or 10 (500 million years), with the remaining neutral hydrogen becoming fully ionized z = 5 or 6 (1 billion years), when Gunn-Peterson troughs that show the presence of large amounts of neutral hydrogen disappear.

  8. The AOL.com video experience serves up the best video content from AOL and around the web, curating informative and entertaining snackable videos.

  9. Michael Callahan (rowing) - Wikipedia

    en.wikipedia.org/wiki/Michael_Callahan_(rowing)

    1 Early life. 2 College and later ... 5 References. 6 External links. Toggle the table of contents. ... Callahan has been named the Pac-12 Coach of the Year 10 times ...