MERLOT Materials

Fourier waveforms are built by adding sine waves, controlled by frequency/amplitude sliders similar to a graphic... see more

In Circle Inversion, a user drawn picture is inverted over one or more circles.

Cellular Automata runs an assortment of 1- and 2-dimensional cellular automata, allowing the user to set the rules... see more

Pascal's Triangle shows how binomial coefficients and other systems can be used to generate fractal pictures.

Aristid Lindenmayer, a botanist, invented L-Systems to describe plant development. L-Systems generates 2-d fractal... see more

Mandelbrot-Julia Sets explores the famous Mandelbrot Set and its associated Julia Sets with paired plots. Each point of a... see more

ForestNPP is a simple calculator that estimates forest net primary productivity, before and after climate change... see more

Ecology is a construct-your-own-foodweb simulator, from a supplied collection of plants, herbivores, omnivores, and a top... see more

Disease demonstrates contagious disease spread through a population. Three diseases (Kold, Impfluenza, and Red Death) are... see more

Demographics explores population growth pyramids, much like my Human Demographics simulator below, where you can change... see more

The Carbon Cycle uses an equilibration model to show how once fossil carbon is released into the air, it migrates into... see more

Kuizu is a Japanese vocabulary quiz program. It features several intermediate level word lists, flash cards, multiple... see more

WordShapes is a spelling game for developing visual memory. The word lists are taken from the Dolch basic sight words... see more

Calligraphy is my second most popular app. I wrote the original 1997 Java applet a throwaway programming example - but... see more

A collection of simulations on a variety of topics that bridge mathematics and biology. Humans & the Environment Ecology... see more

Box Dimension is a Java-applet based page that allows students to compute box-counting dimensions for a variety of... see more

Fractal Music Composer is a powerful music editor. Students build their own musical phrases out of notes from their... see more

Population Growth provides 2 plots to help compare the different basic population growth models of Ecology. Multiple... see more

Foodweb Kerplunk is a game about species relationships. Playing as a town councilmember in suburban California, you try... see more

The Aid Game is about giving charitable aid to developing countries. These countries may suffer the dual challenges of... see more

Explores social and environmental tradeoffs in the farming civilization of ancient Subir (closely related to ancient... see more

Population pyramids. Allows students to shift and change demographic rates, to better understand human population... see more

A series of applets for teaching Fractal Geometry. Includes: L-Systems; Box-Counting Fractal Dimension; Cellular... see more

A pattern block editor, allowing students to create pictures with the standard block shapes. Can color the shapes,... see more