This module focuses on collecting, organizing, displaying, and interpreting primary data using tally charts, concrete graphs, pictographs, line plots, and simple bar graphs. Emphasis is also placed on investigating probability in everyday situations and simple games. 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.