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In this article, we explain what we mean by an "interactive mathematics text"; we describe its goals, contents, and pedagogical methods; and we explain the thinking that went into in writing our text, Visual Linear Algebra.
A module for studying lines, circles, and triangles in the hyperbolic plane
Flash CS3 (Actionscript 3.0) templates and classes for graphing functions in one variable as well as parametric curves in rectangular or polar coordinates.
Gauss-Kronrod Integration is an adaptation of Gaussian quadrature used on some graphing calculators. This Java applet outlines the mathematical computations involved and visually demonstrates the process the calculator uses to evaluate the integral.
This mathlet provides an innovative tool that allows the user to sketch a function with the mouse in order to examine some common issues and misconceptions about the average value of a function.
This is an article about the contents and use of the Duke Connected Curriculum Project interactive mathematics materials.
Two applets for giving students some hands-on practice with cycle notation and composition of permutations.

Events in our world are often modeled with differential equations. This article develops numerical solvers for ODEs. Interactive applets explore topics including slope fields and numerically solving definite integrals and differential equations.

This utility uses the free Flash player plug-in resident in most browsers to provide the student with interactive examples and practice problems to aid in learning about spherical coordinates.
An article describing the development of a database for online formative assessment to be used as independent or supplemental material for a precalculus course.