Materials in History - Presentation

The presentation on 'Materials in History' delves into the fascinating world of materials and their applications throughout time, with a focus on the field of Chemistry and the uses of everyday materials. Students are encouraged to consider the properties of different materials and how these characteristics make them suitable for specific purposes. The lesson aims to answer two key questions: Can I describe some of the properties of materials? And, can I link the properties of a material to its suitability for a particular use? The session also explores the benefits of plastics, prompting students to think critically about the role of plastic in society, its usefulness, and its environmental impact compared to other materials.

Further into the lesson, students are tasked with writing a report on four types of siege engines – battering rams, catapults, ballistae, and trebuchets. They explore the materials these engines were made from and how their properties contributed to the functionality of these formidable machines. Practical activities include experiments with catapults and trebuchets, where students investigate the properties of wood, such as its elasticity and strength, and how these contribute to the launching of a pompom. Additionally, an intriguing experiment on making plastic from milk introduces students to the chemical reaction between milk and vinegar, resulting in the formation of casein, which hardens over time. By the end of the session, students are expected to have a deeper understanding of material properties and their applications in history, as well as the implications of material choices in construction and environmental sustainability.