test post-all in one-freebie and member content together

Is Earth history fun? Yes! This lesson reaches back to the beginning of earth and presents its entire life, up to now, on the scale of a 24-hour clock. Now that’s serious fun (at least for us science people).

Parts of this Lesson:

  • PowerPoint (Free)
  • Student Handout, Teacher Notes, and PowerPoint combined (Members)
  • Answer sheet (Members)
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