Instructional Video

Speciation: Of Ligers and Men

Ligers grow at a rate of 2.2 pounds every second day, thus by the end of their first year, they can weigh up to 364 pounds. Ligers are the subject of a video the looks at hybrids and shows viewers how speciation can occur via allopatric and sympatric speciation. 

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CCSS: Adaptable
NGSS: Adaptable
Additional Tags
Instructional Ideas
  • Pause video after allopatric speciation discussion so pupils can take notes, ask questions
  • Pause again after sympatric speciation
  • Have learners research different examples of speciation and present to class
Classroom Considerations
  • The narrator uses some interesting language, for example bump uglies for reproduction, kick ass, and getting it on process, which may not be appropriate for your students
  • Video 15 in a series of 40
  • Video includes a table of contents, making t easy to show only certain clips
  • Shares interesting information about the Grants' research on finches in the Galapagos
  • Language may not be appropriate for the classroom
Common Core