The 11 lessons in this module introduce students to the characteristics of matter, and properties such as buoyancy, solubility, and interactions of materials. Students investigate solids, liquids, and gases, and physical and chemical changes. As well, they explore the manufacturing of products, and investigate safety precautions with household chemicals. Also included: materials lists activity descriptions questioning techniques activity centre and extension ideas assessment suggestions activity sheets and visuals The module offers a detailed introduction to the Hands-On Science program (guiding principles, implementation guidelines, an overview of the skills that young students use and develop during scientific inquiry), a list of children's books and websites related to the science topics introduced, and a classroom assessment plan with record-keeping templates.