In 1916, a French coal mine director named Henri Fayol wrote a book entitled "Administration Industrielle et Generale," which set forth five distinct functions of managing that Fayol insisted were ...

For novices, functions are one of the most intimidating features of OpenOffice.org's Calc. Newcomers quickly learn that functions are a main feature of spreadsheets, but there are almost four hundred, ...

This paper presents a conceptual analysis for students' images of graphs and their extension to graphs of two-variable functions. We use the conceptual analysis, based on quantitative and ...