Testing Materials - Presentation

Today's presentation on testing materials delves into the intriguing world of chemistry and everyday materials, specifically focusing on waterproof and absorbent properties. The session begins by posing thought-provoking questions that encourage students to connect the physical features of materials with their inherent properties and to consider the suitability of different materials for creating various objects based on these properties. The learning objectives are clear: to understand the difference between waterproof and absorbent materials, to link physical characteristics to material properties, and to make informed material choices for object construction.

The interactive part of the lesson includes listening to a 'Materials Song' that aids in learning through music. Following the song, students are prompted to answer questions about the properties of glass and plastic, thus applying their understanding of material properties in practical contexts. The lesson then moves on to explore the concepts of transparency, with activities that help students differentiate between transparent and opaque objects and understand their uses in everyday life. Waterproof materials are introduced, explaining that they prevent water penetration, while absorbent materials, with their tiny holes, allow water to be soaked up. Students are encouraged to think about real-world applications of waterproofing and to question common assumptions, such as the relationship between a material's texture and its waterproof capabilities. The session culminates in a creative task where students design and build an undersea base, applying their knowledge of waterproof and absorbent materials to ensure the structure's integrity. The lesson concludes with reflective questions that consolidate learning and encourage students to articulate their understanding of the materials' properties and their applications.