That to know by the somatotype transformed, one grade raised to 3rd grade, ectomorph type trend to Mesomorph type or Endomorph type, Until 4th grade trend to Ectomorph type or Mesomorph type. 4.

㈢由罗列指数的年变化，了解学生年成的体型变化，由一年级至三年级时，从型趋适中型、肥胖型，至四年级则及趋型、适中型的体型。