古人云:“学贵有疑,学则须疑”。疑是思之源,思是智之本。疑是学习知识的开始,也是探求新知的动力。质疑问难,实际上是一个积极思维过程,是发现问题,提出问题的过程。幼儿园的小朋友对周围的事物感到新鲜好奇,经常提出一些大人都无法解答的问题;而上了小学,提问题就越来越少了; The ancients said: “You are suspicious, learn to be suspect.” Doubt is the source of thinking, thinking is the root of wisdom. Doubt is the beginning of learning knowledge, but also the motivation to explore new knowledge. In fact, it is a positive thinking process, which is the process of discovering problems and asking questions. Kindergarten children are curious about things around and often ask questions that adults can not answer. When they come to primary school, they ask questions less and less.