The Proof Einstein Found at Twelve
The Pythagorean theorem seen three ways: count the tiles on the squares of a right triangle, slide four triangles to see a² + b² = c² without an equation, and follow the similar-triangles proof Einstein found for himself at twelve.
Lesson outline
- Count the Tiles
- Slide the Triangles
- Einstein's Proof at Twelve
- A Small Thought Experiment
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