Paint the tiles above the color palette by dragging the left mouse inside the squares. Select a brush color by clicking inside the color palette. Double-click a tile to fill its entire area with a color. When you have painted the tiles, you can view the Cayley table or the quilt by using the View control at the top left (select Table or Quilt). The Operation control selects the operator used to make the Cayley table. The Quilt control selects the way the table is used to make the quilt.

See the diagram at the bottom of this page for a visual guide, and read about how the quilts are made in the "about" section. Explore the connection between the quilt patterns and clock arithmetic with the Clock Arithmetic demonstration.

Note : You'll need the JRE (Java Runtime Environment) to view this applet. It is available from java.sun.com. Look for the Java SE links. You can also visit java.com, which has a diagnostic app that will tell you if you have java installed.

This applet is available free as a stand-alone application, which can be run outside of a web browser. To get it, download and save this jar archive file : CQM.jar You can run this jar file with the Sun Java Application Launcher (which should come with the JRE). For help running java applications, you can read this page : javaapp.html.

Using the Save Image item in the View control, you can save the quilts in jpg, png or bmp format. To save an image file, you must grant file-writing permission to this applet. Read this page imgsave.html for help saving images.

Windows OS users can get the free user-friendly Windows version of this applet here : cquilter.html The Windows version saves bmp images, and it has printer support and a help file.

For copyright information, select the Copyright item in the View control and view this page :copyright.htm.

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