Why Did T Rex Have Such Tiny Arms?

Explore explanations for the shockingly small size of the T-rex arms. A video lesson considers reasons why a T-rex has small arms through a process of elimination. Maybe the arms provide an advantage to the animal or maybe larger arms were simply a disadvantage. The narrator tackles the question from various angles.

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CCSS: Adaptable
Instructional Ideas

  • Pair the lesson with additional videos in the series to show examples of unexplained animal adaptations
  • Brainstorm additional animal traits that seem odd
Classroom Considerations

  • Expects a basic understanding of animal adaptations

  • Connects the question to animal behaviors and evolution
  • Incorporates engaging images to add interest and clarity

  • None
Common Core