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由罗列变化，了解学生成长体型变化，由一至三，从瘦长型趋向适中型、肥胖型，至四则及趋向瘦长型、适中型体型。