This resource focuses on the fundamental principles of Cell Theory and applies them to a real-world scenario involving skin grafting. It outlines the three core parts of Cell Theory: that all living things are comprised of cells, the cell serves as the basic unit of structure and function in living organisms, and that all cells arise from pre-existing cells. Students engage in activities that encourage them to connect their observations from skin grafting to these principles. By analyzing a scenario where a skin graft is used to treat severe wounds, students match observations to the relevant pillars of Cell Theory, justify their answers, and reflect on the role of cells in tissue regeneration. The material emphasizes understanding that a tiny skin graft contains thousands of cells, further demonstrating the concept of cells as the basic unit of life.