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Lesson summary for:
ChronoZoom

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Overview:
"Big History" is the currently active effort to bring together in a unified way all of the information about the past, both humanistic and scientific. One of the problems for anyone teaching Earth history or Big History is how to help students – or anyone – to comprehend the time scales. This series of graphic panels helps address this challenge by presenting Big History in a sequence of time scales.

Author/Source:
The ChronoZoom Team

Grade level:
13-16

Time:
1-6 hours

Teaching tips:
This resource is best suited for those teaching specialized undergraduate or graduate level courses in Big History or Earth History.

Concepts:
Correspondence to the Next Generation Science Standards is indicated in parentheses after each relevant concept. See our conceptual framework for details.

  • Biological evolution accounts for diversity over long periods of time.

  • Through billions of years of evolution, life forms have continued to diversify in a branching pattern, from single-celled ancestors to the diversity of life on Earth today.

  • Present-day species evolved from earlier species; the relatedness of organisms is the result of common ancestry.

  • Life on Earth 3.8 billion years ago consisted of one-celled organisms similar to present-day bacteria.

  • There is evidence of eukaryotes in the fossil record from about one billion years ago; some were the precursors of multicellular organisms.

  • Geological change and biological evolution are linked.

  • Tectonic plate movement has affected the evolution and distribution of living things.

  • Living things have had a major influence on the composition of the atmosphere and on the surface of the planet.

  • Mass extinctions occur.

  • Extinction can result from environmental change.

Teacher background:

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