Hopewell Geometry

Right triangles from 2,000 years ago? Learners investigate different right triangles found in the earthworks of the Hopewell people, a Native American culture that populated the United States from 200BC to AD 500. Learners apply concepts of right triangles, including the Pythagorean Theorem and trigonometry, to triangles found it the earthworks.

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CCSS: Designed
Instructional Ideas

  • Use the resource as an assessment task after a unit on right triangles
  • Project images of the Hopewell Earthworks enclosure
Classroom Considerations

  • Have calculators available for pupils
  • Learners need to have prior experience with the Pythagorean Theorem, right triangle trigonometry, and similar figures

  • Learners in the Central Ohio Valley may find the context interesting
  • Task allows for multiple solution methods

  • Context is not applied or needed in the task
  • Triangle 3is missing critical information