Earth History Collection

This resource features 5-part cards designed to help students learn about Earth’s history for exploring Second Great Lesson.
The cards cover important time periods called eons and eras, including:

Hadean Eon: The time when Earth was formed, over 4 billion years ago.
Archean Eon: The period when the Earth’s crust cooled and simple life began, from 4 to 2.5 billion years ago.
Proterozoic Eon: This eon saw the development of more complex life, lasting from 2.5 billion to 541 million years ago.
Paleozoic Era: Known for the rise of fish, land plants, and early amphibians, from 541 to 252 million years ago.
Mesozoic Era: The age of dinosaurs, from 252 to 66 million years ago.
Cenozoic Era: The current era, starting 66 million years ago, known for the emergence of mammals and birds.
Human Evolution and Characteristics 3 part cards.