Loci Browse Articles

Displaying 71 - 80 of 328

Filter by subject

This module develop the SIR Model for the spread of an infectious disease, including the concepts of contact number and herd immunity.

Expectation Maximization and Mixture Modeling Activity

This is a pair of (1D and 2D) SOCR Activities that demonstrate random sampling and fitting of mixtures of Gaussians to model complex data (e.g., multimodal).

Java Math Pad

This applet, designed as a limited computer algebra system, allows the user to evaluate mathematical expressions, including those of interest in a calculus class.

The Consumer Price Index and Inflation

A module to explore Consumer Price Index data by fitting an exponential curve to it in Excel

Animated Sequences

A mathlet that allows you to visualize a sequence (or series) of real functions.

Mathematical Brooding over an Egg

This article explores how mathematical techniques, digital images, and dynamic geometry software can be used to analyze a real-world situation originating from poultry science. The topic is mathematical modeling of the shape of an egg, where the underlying question is: What is the volume and surface area of a hen's egg?"

A Collection of Tools for Multivariable Calculus

This utility uses the free Flash player plug-in resident in most browsers to allow the user to plot 3D curves and surfaces on a customized scale and dynamically rotate the 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