根据课标理念,考虑到第二学段的学生的活动空间相对于第一学段来说,有了较大的扩展。具体教学时,应注意以下几点:1.从生活实际出发,精心创设问题情境新课程倡导学生由原来的接受式学习转变为主动、合作、探究式的学习,以此激发学生的学习兴趣和学习动机。这种探究式的学习总是围绕具体的问题展开的,因此,教师要根据学习的内容,精心创设有价值的问题情境。小学阶段,学生对负数的学习,主要是出于表示生活中具有相反意义的量的需要。教学时,教师应从生活实际出 According to the concept of curriculum standard, taking into account the activities of students in the second semester of activity space relative to the first semester, has been greatly expanded. Specific teaching, should pay attention to the following points: 1. From the reality of life, carefully create the problem situation The new curriculum advocate students from the original acceptance of learning into active, cooperative, exploratory learning, in order to stimulate students interest in learning and Learning motivation. This kind of exploratory learning always revolves around specific problems. Therefore, teachers should carefully create valuable problematic situations according to their learning content. In primary school, students' learning of negative numbers is mainly due to the need to express the opposite sense of life. When teaching, teachers should come out of reality