Interactive iterated map with corresponding time sequence
Students can drag points to modify the initial condition and the iterative function at any time, and may perform any number of iterations.
This page is available in Spanish as http://geogebratube.com/material/show/id/53309 .
There is a "YouTube" video that shows how to use this construction: http://www.youtube.com/watch?v=Of7BPQfz6Jo