科学家做过一个有趣的实验:把跳蚤放在桌上,跳蚤跳起高度在其身高的100倍以上。然后在跳蚤头上罩一个玻璃罩,再让它跳,这一次跳蚤碰到了玻璃罩;连续多次后,跳蚤每次跳跃总保持在罩顶以下的高度。美国幼儿教育家凯茨在孩子的身上也发现了类似的现象,他称之为“习惯性愚蠢”。他说,很多孩子在学习的过程中,会因为某些原因,逐渐产生对学习的怀疑,并因此而丧失了自信心。在他人的眼里,就会觉得他们“越来越笨”了。在教学 Scientists have done an interesting experiment: the fleas on the table, fleas jumping height of its height more than 100 times. Then cover the head of the flea with a glass cover, and let it jump, this time the flea hit the glass cover; successive times, the flea always keep the jump in the hood below the top of the height. US kindergarten educator Katz also found a similar phenomenon in children, he called “habitual stupidity ”. He said many children in the process of learning, because of some reasons, the gradual emergence of doubt on learning, and thus lose confidence. In the eyes of others, they will feel “stupid”. In teaching