Where Does Energy Come From? (Extended Lesson)
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Where Does Energy Come From? (Extended Lesson)

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Students use logic to work through thought experiments involving relative reference frames and inertia. Through these, students are introduced to the concepts of special relativity -- which leads to surprising conclusions about the nature of time and space -- and the fundamental connection between mass and energy.


  • Lesson plans: Where Does Energy Come From? (Extended Lesson Plan)
  • Videos: Alice & Bob: Where Does Energy Come From? (approx. 1 min)
  • Activities: Scientific Models: Time; Scientific Revolution: Special Relativity (worksheets, review questions, and solutions)
  • Supplementary Materials: How to Build a Black Box Model

(Note: all lesson plans and worksheets provided as PDFs and modifiable MS Word documents)

Intended Audience: Senior High (Gr 11-12)
Lesson Topics: Energy, Relativity
Price: Free

This individual lesson plan is part of the Revolutions in Science lesson compilation.