Jack tries to place magnets on the door of his refrigerator. He observes that the magnets don’t stick. He guesses that the door of the refrigerator is made of a nonmagnetic substance. What stage of scientific investigation does his guess represent?
Jack already made his observation (magnet doesnt stick). Â After that Jack then guesses that the fridge was made of nonmagnetic substance. Â Now he must construct a hypotesis.
