"Although the has largely given way to the pocket calculator... the pedagogical value of making one's own [slide or other] rules of various kinds remains. Napier's rods are easily made by schoolchildren and the historical route by which the modern slide rule evolved can be followed through with advantage. If has been taught at some stage, the principles of Napier's rods will already be understood. Many different kinds of graduated rule can be experimented with, including those of arithmetic scales (to be used for addition and subtraction) and those with geometric scales (for multiplication and division). It is not necessary to mention the word 'logarithm'; it is sufficient to introduce arithmetic and and to utilize the rules themselves in order to introduce the principles of logarithms."
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Original Language: English
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Sources
Graham Flegg, Numbers: Their History and Meaning (1983)
https://en.wikiquote.org/wiki/History_of_logarithms
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History of logarithms
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