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Science · All grades

The Three Sisters: Indigenous Agricultural Wisdom

This four-page lesson explores how corn, beans, and squash support one another in the Three Sisters planting system.

$4USD · Digital download

This four-page lesson explores how corn, beans, and squash support one another in the Three Sisters planting system. Students learn about ecological symbiosis, nitrogen fixation, natural trellising, living mulch, and soil moisture through explanations and written-response questions.

4 pagesof ready-to-use material · PDF
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What you’ll teach

Clear goals. Useful learning.

  • Students will explain the symbiotic relationship among corn, beans, and squash.
  • Students will identify each plant’s role in the Three Sisters system.
  • Students will describe how beans enrich soil through nitrogen fixation.
  • Students will connect plant structures and functions to ecological benefits.