This web based PowerPoint activity is the perfect tool for review and re-teaching topics like, bar graphs, line graphs, scatter plots, histograms, line plots, stem and leaf plots, box and whisker plots, circle graphs, and measures of center. In the PowerPoint, students hyperlink to interactive web pages that teach and review the concepts. There is also an on-line test at the end. A graphic organizer (free in my store) help students to summarize the concepts in the review. This activity is great for the students who work well alone or need to be retaught.