Embark on a journey to explore the world of radioactivity in this IGCSE Prescribed Practical, where we demonstrate how to measure the activity of a radioactive source using a Geiger-Muller tube. This experiment will teach you about the principles of radioactivity, radioactive decay, and ionizing radiation, as well as the importance of safety when working with radioactive materials. By understanding radioactivity and how to measure it, you'll be better prepared for various applications in physics, medicine, and engineering. Join us in this exciting and informative practical investigation into the world of radioactivity.