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Maxima is a system for the manipulation of symbolic and numerical expressions, including differentiation, integration, Taylor series, Laplace transforms, ordinary differential equations, systems of linear equations, polynomials, and sets, lists, vectors, matrices, and tensors. Maxima yields high precision numeric results by using exact fractions, arbitrary precision integers, and variable precision floating point numbers. Maxima can plot functions and data in two and three dimensions.

Two Indiana teachers, Harriet Armstrong and Autumne Streeval, whom I trained how to use tic-tac-toe as a strategy for implementing universal design for learning in February, won a national contest sponsored by Microsoft. They will travel to Brazil in November to compete internationally. Read more in eSchool News. View their award winning tic-tac-toe grid on the Industrial Revolution (9th grade), and view their rubric.