Treehut
Suzy's World: What Is Time?
This site from Suzy's World and Suzy Cato provides a brief definition of what time is and early methods of measuring time. Also includes two time experiments and tells you how to figure out your age in hours.
Enchanted Learning
Enchanted Learning: English (Esl) Label Me! Printouts
Over 100 handouts with answer sheets you can print and use to help build English vocabulary. Numerous topics and themes are covered: everyday words, math terms, seasonal and holiday words, geographical terms, animals, opposites, parts of...
Curated OER
Extreme Science: Systems of Time: Atomic Time
Did you know that Atomic Time, "is the most accurate realization of a unit that mankind has yet achieved?" Learn about this and other systems of time and how they are used.
Curated OER
European Library: Reading Europe: European Culture Through the Book: Clock
Clock, with roman numerals.