Curated OER
Geological Time Scale
In this geological time worksheet, student use a geologic time scale to understand the difference between eons, eras, and periods. Then students complete 2 short answer questions.
PBS
Pbs Learning Media: The Wall of Time
This illustrated timeline from the Lunar and Planetary Institute provides a journey through four-and-a-half billion years of time from the birth of our solar system to its current existence today.
University of Kentucky
University of Kentucky: Important Dates and Cool Creatures in Earth History
A bullet list of important events in Earth's history broken down by eons, eras, periods, and epochs.
CK-12 Foundation
Ck 12: Earth Science: Geologic Time Scale
[Free Registration/Login may be required to access all resource tools.] How the geologic time scale is divided.