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Hans Freudenthal - Choice Quotes

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The urn model is to be the expression of three postulates: (1) the constancy of a probability distribution, ensured by the solidity of the vessel, (2) the randomcharacter of the choice, ensured by the narrowness of the mouth, which is to prevent visibility of the contents and any consciously selective choice, (3) the independence of successive choices, whenever the drawn balls are put back into the urn. Of course in abstract probability and statistics the word " choice " can be avoided and all can be done without any reference to such a model. But as soon as the abstract theory is to be applied, random choice plays an essential role.

Hans Freudenthal
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[Guided reinvention is] striking a subtle balance between the freedom of inventing and the force of guiding, between allowing the learner to please himself and asking him to please the teacher. Moreover, the learner's free choice is already restricted by the re of reinvention. The learner shall invent something that is new to him but well-known to the guide.

Hans Freudenthal

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Worry does not empty tomorrow of its sorrow. It empties today of its strength.
Corrie ten Boom

Hans Freudenthal

Hans Freudenthal
Creative Commons

Born: September 17, 1905
Died: October 13, 1990 (aged 85)
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