Method, box, location tester for instructing robot, and robot working method

To automatically generate teaching data in a development cassette, by omitting teaching using the development cassette on the basis of the teaching data provided by teaching using a reference cassette for reducing a burden of teaching work of a robot. Identification marks 1 to 4 are arranged in the cassette, and position information on the cassette is provided by operating such an identificationmark by a position measuring apparatus 500. The physical positional relationship between the reference cassette and the development cassette is determined by this position information, and development teaching data in the development cassette is automatically generated from reference teaching data taught in advance by using the reference cassette. The development teaching data is also corrected by detecting strain of the cassette by recognizing a shape of the cassette by the identification marks 1 to 4 arranged in the cassette.