“变声”这是一个医学、生理学领域内的名词,当然也算是生活术语,其含义为:在青春期,男孩嗓音变粗变低、女孩嗓音变高变细.初一学生刚从小学段跨入中学段,既是一个时间的转折,也是一个空间的刷新,同时也是思维的过渡期,哪一位同学过渡得快,哪一位同学就获得了发展的先机.所谓思维过渡,就是由具体的运算向形式运算过渡(由数到 This is a medical term in the field of physiology, of course, can be regarded as life terms, its meaning is: in adolescence, the boys become thicker voice becomes thinner, the girl voice becomes taller and thinner. Into the middle school segment, is not only a turning point in time, but also a refreshing space, but also the transition of thinking, which students transition quickly, which students get the opportunity to develop the so-called thinking of the transition, is from Specific operations to form the operation of the transition (from count to