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Social Studies

This lesson explores how geography, particularly the effects of plate tectonics and climate change, influenced the development of human life in Eastern Africa. By examining the transition of landforms from Pangea to the present-day landscape, we highlight the emergence of early human ancestors in deforested regions. The adaptations that led to bipedalism, larger brains, and tool-making are discussed, showcasing how geography shaped the evolutionary paths of early humans. Students will reflect on the long-term significance of these geographical changes.

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Social Studies

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Presentation Transcript

  1. Social Studies Essential UNIT Question: How did geography affect the development of the Eastern hemisphere?

  2. Focus Question: • How did the geography of eastern Africa affect the development of human life?

  3. Geography in Motion: • Plate tectonics is the shifting of the Earth’s crust; • The Earth’s landforms once made up a single land mass called Pangea. • Through divergent and convergent movement, the Earth shifted over millions of years to form the present-day continents.

  4. The Earth in 50 Million Years Plate Tectonics are on-going and continue to shift the ground beneath our feet.

  5. The Effects of Plate Tectonics: • The Earth cooled and climates changed. • As a result, continents like Africa lost many of its forests. • Fossil records show that an ape-like ancestor of man emerged from the de-forested areas of east Africa to walk on two legs. (4 million years ago.)

  6. Eastern Africa’s Geography circa 4 MYA

  7. Deforested Eastern Africa Following Climate Change

  8. Survival of the Fittest

  9. A Better, Smarter Version: Larger brains Opposable thumbs Tool-making

  10. Geography Changed Everything! Lucy

  11. The Pre-History of the Human Race • Humans evolved (to change over long periods of time) to avoid extinction. • Humans developed bipedalism: To walk on two feet. • Humans developed stereoscopic sight: To see across great distances, which alerted them to predators. • Humans developedopposable thumbs to buildtools out of stone and other materials. • Using tools made man more independent.

  12. Activity:

  13. What I learned . . .

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