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A module that uses Riemann sums and other numerical methods to investigate of the area of a complex region, specifically, a map of Virginia

WIMS: An Interactive Mathematics Server

An article describing the WWW Interactive Mathematics Server (WIMS), designed for supporting intensive mathematics work via the Internet with server-side interactivity.

Chemical Graph Theory

Chemical Graph theory is used to model physical properties of molecules called alkanes. Java applets allow for interactive exploration of molecules. A student project and discussion of its application are included, along with spreadsheets of model data.

Parametric Curves in 3D

This applet uses the free Flash player plug-in resident in most browsers to allow the user to plot a parametrically defined curve on a customized scale and dynamically rotate the three-dimensional picture.

Interactive Gallery of Quadric Surfaces

A suite of mathlets for interactive exploration of quadric surfaces

Integrator

This mathlet computes Riemann sums for a user-defined function and draws a graph of the function as well as a graphical represenatation of the approximations.

Commentaries

opinion essays from Loci editors

Protein Analysis

A Biological ESTEEM module in the BioInformatics Category. This workbook allows the analysis of sample or imported protein sequences.

Technology in the Upper-Level Curriculum

An article discussing the use of technology in abstract analysis, real analysis, and geometry.

Student Module for 'Thinking Outside the Box'

This is a student module for the article, which presents a fresh look at an age-old calculus optimization problem, the 'box problem.'