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Sirotic, Natasa; Zazkis, Andrina – Educational Studies in Mathematics, 2007
This report focuses on prospective secondary mathematics teachers' understanding of irrational numbers. Various dimensions of participants' knowledge regarding the relation between the two sets, rational and irrational, are examined. Three issues are addressed: richness and density of numbers, the fitting of rational and irrational numbers on the…
Descriptors: Mathematics Teachers, Numbers, Intuition, Secondary School Mathematics
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Regoli, Robert M.; Hewitt, John D.; Munoz, Robert, Jr.; Regoli, Adam M. – Negro Educational Review, The, 2004
While on the surface baseball cards may appear to be a mundane object of child's play, they are precious tools for examining U.S. society. Baseball cards not only hold a wealth of information regarding the players they feature they also reveal much about the state of society at the time of their production and the individuals who collect them. In…
Descriptors: Race, Role, Team Sports, Athletes