The time period is defined in terms of years, quarters and months. YEAR = 2003 etc. QUARTER = 1 is january-March, 2 is April-June etc. MONTH = use numerical values, 1 is January, 2 February ...

In physics, the time taken for one complete cycle of a repeated sequence of events. For example, the time taken for a pendulum to swing from side to side and back again is the ...

Thesaurus Legend: Synonyms Related Words Antonyms. Noun: 1. time period - an amount of time; "a time period of 30 years"; "hastened the period of time of his recovery"; "Picasso's ...

The categorization of time into discrete named blocks is called periodization. This is a list of such named time periods as defined in various fields of study.

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Browse the entries on Ohio History Central by Time Period.

To be added ... Find pages written by our experts on our collections by time period (e.g. 1401-1500, 1901-1918).

Geo-Archaeological Information Applications Lab School of Human Evolution & Social Change Arizona State University, Box 872402 Tempe, AZ 85287-2402

Teaching with Historic Places has developed more than 130 classroom-ready lesson plans that together range across American history. All are available on the Web.

Explore by Time Period Dozens of downloadable teaching activities, books, films, and websites. Select by dates on the timeline above or era on the menu to the right.