Number: What Is "How Many"?
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http://www.mathacademy.com/pr/minitext/number/  


B. Sidney Smith; Math Academy Online/Platonic Realms  
A "minitext" introducing fundamental concepts in elementary number theory and the foundations of mathematics. Includes discussions of basic set theory; natural numbers; integers; rational, irrational, and real numbers. Also gives a brief list of suggested readings.  


Levels:  Middle School (68), High School (912) 
Languages:  English 
Resource Types:  Articles 
Math Topics:  Number Sense/About Numbers, Set Theory 
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