Interactive tutorial into kinship symbols

The animation should start automatically. The animation is finished when "End of Tutorial" appears. You can repeat a chapter or the whole animation by clicking on the buttons when they appear.
If your browser does not support Flash version 4, you may want to check plug-in downloads at Macromedia. Best results were obtained with Netscape 6. Internet Explorer users: if the animation does stop, or you feel it is running slowly, move the mouse or even click the animation. This is a first trial, and the animation will improve with the time, hopefully.