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50 Years of ERIC
50 Years of ERIC
The Education Resources Information Center (ERIC) is celebrating its 50th Birthday! First opened on May 15th, 1964 ERIC continues the long tradition of ongoing innovation and enhancement.

Learn more about the history of ERIC here. PDF icon

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On Vieta's Formulas and the Determination of a Set of Positive Integers by Their Sum and Product
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Valahas, Theodoros; Boukas, Andreas – Australian Senior Mathematics Journal, 2011
In Years 9 and 10 of secondary schooling students are typically introduced to quadratic expressions and functions and related modelling, algebra, and graphing. This includes work on the expansion and factorisation of quadratic expressions (typically with integer values of coefficients), graphing quadratic functions, finding the roots of quadratic…
Descriptors: Algebra, French, Mathematics Instruction, Mathematics Activities
Intersection of the Exponential and Logarithmic Curves
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Boukas, Andreas; Valahas, Theodoros – Australian Senior Mathematics Journal, 2009
The study of the number of intersection points of y = a[superscript x] and y = log[subscript a]x can be an interesting topic to present in a single-variable calculus class. In this article, the authors present a classroom presentation outline involving the basic algebra and the elementary calculus of the exponential and logarithmic functions. The…
Descriptors: Calculus, Mathematics Instruction, Secondary School Mathematics, Algebra