著名心理学家皮亚杰在其“发生认识论”中明确指出 :“１０岁左右的儿童已基本具备了形象思维的能力 ,并成长着逻辑思维的绿荫。”从小学四年级学生思维能力的现实来看 ,具有以下特征 :１ 形象思维占主导地位。学生思维发展的重要特点是思维的具体形象性 ,即思维总是和具体的事 Piaget, a famous psychologist, clearly pointed out in his Epistemology of Epidemiology: “Children around the age of 10 have basically possessed the ability of thinking in images and growing the greenery of logical thinking.” From the thinking ability of the fourth graders In reality, it has the following characteristics: 1. Image thinking dominates. An important characteristic of the development of student thinking is the specific image of thinking, that is, thinking is always and specific things