Software Resources

  • Graph by Ivan Johansen
    A free, really-simple-to-use application for graphing functions, plotting tangent lines, calculating areas under curves, and lots more... It does a particularly good job in quickly plotting piecewise defined functions, derivatives of functions, datasets, and relations (i.e., constraints). (download)

  • NCTM Core Math Tools
    A free suite of interactive software tools for investigating mathematics. (download)

    Items of note include:

    • A simulation tool that models probabilistic situations involving discrete and continuous outcomes; constructs simple and complex events with and without replacement; displays tabular and graphical results; and produces samples of varying size from distributions with an underlying probability model.

    • A data Analysis tool that produces graphs and analysis of univariate and bivariate (categorical and quantitative) data including fitting algebraic models by-hand or “best-fit”; calculates descriptive statistics; performs chi-square tests for two-way tables; and contains pre-loaded data sets that have been carefully selected to highlight centrals ideas of statistics.

    • A spreadsheet tool that displays and computes data stored in cells of a table; relates rows and columns by formulas; explores problems and models numerically including linear programming and “what-if” scenarios; and produces graphs for models not easily represented by algebraic models.

    • A computer algebra system (CAS) tool that manipulates symbolic expressions, equations and inequalities; solves in exact and decimal forms; produces graphs and tables; expands and factors polynomials; explores parameters used in functions; slices implicitly-defined surfaces; and computes with matrices.