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Unit Plan
CK-12 Foundation

Ck 12: Biology: History of Life

For Students 9th - 10th
[Free Registration/Login may be required to access all resource tools.] This comprehensive lesson by CK-12 explains how scientists learn about the past by examining and dating fossils.
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Unit Plan
CK-12 Foundation

Ck 12: Biology: History of Life

For Students 9th - 10th
[Free Registration/Login may be required to access all resource tools.] Describes how scientists learn about the past by examining and dating fossils.
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Article
Open Curriculum

Open Curriculum: Studying the History of Life

For Students 9th - 10th
This in-depth article illustrates the concept of geologic time, and helps the learner understand why fossils are rare.
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Handout
CK-12 Foundation

Ck 12: Biology: Evolution of Multicellular Life Study Guide

For Students 9th - 10th
This comprehensive study guide covers the main terms and concepts needed for a unit on the evolution of multicellular life.
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Unit Plan
CK-12 Foundation

Ck 12: Life Science: Timeline of Evolution

For Students 6th - 8th
[Free Registration/Login may be required to access all resource tools.] For life to evolve from simple single-celled organisms to many millions of species of prokaryotic species to simple eukaryotic species to all the protists, fungi,...
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Article
Open Curriculum

Open Curriculum: Multicellular Life

For Students 9th - 10th
To describe the diversity of unicellular organisms which arose over 2 billion years of evolution.