Observation: This is a method used in science where information is gathered using senses or instruments. It's like our chef tasting, smelling, or visually inspecting his ingredients before deciding how to use them.
Experimentation: This is a procedure carried out under controlled conditions to discover an unknown effect or law, test or establish a hypothesis, or illustrate a known law. It's like our chef trying different cooking methods until he finds one that brings out the best flavor in his dish.
Innovation: This refers to creating more effective processes, products, and ideas. For our chef analogy, innovation might be inventing an entirely new dish that no one has ever tasted before.