This module focuses on collecting and organizing categorical or discrete primary data, and displaying, describing, and interpreting this data on charts and graphs. Emphasis is also placed on predicting and investigating the frequency of a specific outcome in a simple probability experiment. Also included: Materials lists; Activity descriptions; Questioning techniques; Problem-solving examples; Activity centre and extension ideas; Assessment suggestions; and Activity sheets and visuals. All modules include a list of children's books and websites related to the mathematics topics introduced, a detailed introduction to the Hands-On Mathematics program (guiding principles, implementation guidelines, an overview of the skills that students use and develop during mathematics inquiry), and a classroom assessment plan and record-keeping templates.