Curated OER
Atomic Time Lines
Students understand the evolution of the atomic model from Ancient Greece to the present. They then choose one of the options as a project using class time to do research and to be creative.
Other
The Official U. S. Time
Get the official U.S. time from the official U.S. timekeepers, the National Institute of Standards and Technology (NIST), and its military counterpart, the U.S. Naval Observatory. Java needs to be enabled to see the timeclocks. There are...
Extreme Science
Extreme Science: Systems of Time: Atomic Time
Resource provides an article which explains what atomic time is and how it is used.