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Online Course for Teachers: Teaching Evolution

About this Course 


SESSION 3: What Is the Evidence for Evolution?

Engage Part A: Whale Evolution

Image of a whale breaching.

Mammals evolved on land over 200 million years ago. So how did the whales, the world's largest mammals, end up back in the water? To find out, watch Video for Students: "How Do We Know Evolution Happens?"

How Do We Know
Evolution Happens?

View in:
QuickTime | RealPlayer

Think about:


What can we learn from fossil evidence?


How do the transitional fossils of whales support the theory of evolution by natural selection?


What specific fossil evidence points to whales' evolution from land to water?


Next: Engage Part B: Build a Concept Map

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