Abstract
Since the first JCE Classroom Activity was published in 1997, the Student Activity side of each Activity has listed suggested World Wide Web sites for students to visit. That particular section is currently called Information from the World Wide Web. Sites typically provide additional background information about the specific topics presented in the Activity, information about related concepts, and more activities and experiments to try. A recent JCE article and Especially for High School Teachers column discussed the phenomenon of rot. Links to specific World Wide Web sites can be fairly fluid—a link might change to a different location, or a particular site might die. This discussion raised a qestion in my mind related to the JCE Classroom Activity series: how many URLs remain active on the Activities, particularly the early ones? Linda Fanis of the JCE staff offered to investigate and the result is below. She checked Activities #2 and #22, which are both related to color. She found significa...
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