创设有效的教学情境是解决数学内容的高度抽象性和小学生思维具体形象性矛盾的有效策略。一个好的教学情境能激发学生的学习兴趣和探索欲望,它所蕴含的大量数学信息能给学生提供广泛的数学活动的机会。因此,创设有效的教学情境是广大数学教师的一贯追求。下面以北师大版教材三上“吨的认识”教学为例,来谈实践体会。一、在新课引入时,创设问题情境,激发学习兴趣兴趣是儿童认识需要的情趣表现,是儿童主动探索知识的心理基础。学生的全部学习活动,都伴 Creating an effective teaching situation is an effective strategy to solve the highly abstract nature of mathematical content and the specific image of primary school students thinking. A good teaching situation can stimulate students’ interest in learning and exploration of desire, which contains a large number of mathematical information to provide students with a wide range of mathematical activities. Therefore, the creation of an effective teaching situation is the consistent pursuit of the majority of mathematics teachers. The following version of the three textbooks on the North division “Tons of knowledge ” teaching, for example, to talk about practical experience. First, the introduction of the new lesson, the creation of a problem situation, to stimulate interest in learning interest is the child’s cognitive needs fun performance, is the psychological basis for children to actively explore knowledge. Students all the learning activities, all accompanied