Duke University
Duke University: Web Feats Ii: Lessons on Regression at Hessian
This site has several lessons on regression, "Designed to help students visualize topics associated with lines of regression, given a set of data points." Go to the teacher notes to find the objectives and standards which apply.
York University
York Univ.: Statistical Graphics for Multivariate Data
Provides several graphical representations of multivariate data. This paper explains the graphs such as the scatter plot and several other graphs as well. Site is presented in notes and outline format.