This document discusses tools and techniques for visualizing collections to effectively communicate trends, comparisons, and other insights from assessment data. It provides examples of different chart types in Excel and Tableau that can help explore trends over time, compare parts to a whole, and rank items. The document emphasizes designing charts for readability and highlighting important data through simplification, organization, and avoiding unnecessary complexity. Resources for further learning about data visualization in Excel, Tableau, and general best practices are also listed.