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# Tag Archives: proof

## Rotating Earth: the proofs or significance of Leon Foucault’s pendulum – Part 1

In an earlier post, we had discussed proofs of the round shape of the Earth. This included some ancient and some modern proofs. There was, in general, a consensus that the shape of the Earth was spherical and not flat … Continue reading

Posted in eric rogers, figures, history, physics, science, science education
Tagged aristarchus, astronomy, earth revolution, earth rotation, foucault, history, observations, parallax, planets, proof, stars, theory
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## What is a mathematical proof?

A dialogue in The Mathematical Experience by Davis and HershÂ on what is mathematical proof and who decides what a proof is? Let’s see how our ideal mathematician (IM) made out with a student who came to him with a strange … Continue reading

Posted in education, mathematics, mathematics education
Tagged mathematical ideas, mathematics, norms, proof, teaching
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