A great deal of thought and time has gone into choosing sites that are intended for student use. However, with the rapidly changing nature of websites and the World Wide Web, including the multitude of links located on each site, web addresses change, sites close down, and content changes. For that reason, no responsibility for the content of sites other than my own will be acknowledged. Parental guidance and rules regarding the use of the internet are essential. At no time should a student use the internet unsupervised.