When considering education and how to help ideas stick, one can't help but think about the famous quote: "When I hear and I forget. I see and I remember. I do and I understand." For any student of any discipline, doing is understanding. Respected British astrophysicist Martin Rees said, "Crucial to science education is hands-on involvement: showing, not just telling..."
Our knowledge of the sciences - physics, chemistry, and biology are based on generations of discovery, observations, and hands-on learning. When a student mixes chemicals, measures the speed of gravity, or holds a pig heart in their hands they connect with a rich history and understanding fueled by human curiosity and observation. In IGCSE sciences we value a hands-on approach to understanding the concepts in each of the disciplines.
In IGCSE Biology, the study of life, students are given a hands-on experience of the inner workings of life. Dissection is one of the best ways to get a hand-on experience with the ideas and concepts of anatomy and physiology. In studying the circulatory system in animals, the students were fascinated with the fact that a frogs heart can continue beating for hours after it's death, but when dissecting a frog and seeing it firsthand, it becomes cemented into their minds.
Our lungs are responsible for gas transfer, the removal of waste carbon dioxide and the intake of oxygen from the air. Lungs are similar to balloons in the way they expand and contract as air is breathed. In order for lungs to function, there has to be a lot of membrane surface area in a very compact space. The human lungs' internal surface area can be close to 100 square meters. Reading this in a textbook is fascinating, but holding a pig's lung in your hands as it is inflated really drives home how amazing the lungs truly are.