This class provides a hands-on introduction to the types of quantitative data/information that urban, regional/provincial, and community planners, policymakers, practitioners, and activists most often engage with when making decisions and taking action. Numbers are powerful, useful, and will likely be part of your career in some way. This course is designed to give you confidence working with them. This is not a lecture or discussion-based course with a long academic paper, formal exam, or lengthy discussions. This is not a theory or conceptual class, though we will be critical of the methods we use. This is a technical skills-building, action-based, lab course. We are not going to focus on "talking about" numbers, but actually working with them: we will primarily learn by doing. The class is organized into four distinct modules, effectively four miniature courses. Each three-week module covers a specific domain: GIS, finance/budgeting, economics and demographics, and statistics/data analytics.