r and K Selection

Some species have one gender that is r-selected while the other is K-selected.  A video focuses on growth rate and the difference between r-selected species and K-selected species. It includes a discussion of fecundity and carrying capacity. 

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Instructional Ideas
  • Discuss if humans are r- or K-selected based only on their growth rate and why this seems contradictory given the definition of each
Classroom Considerations
  • Requires prior knowledge of interpreting graphs
  • Be aware that the comment section is public on YouTube
  • The last in an 18-part series
  • Includes easy-to-understand diagrams that help pupils absorb the content
  • Provides closed captioning to help with note taking
  • None