新课程标准的基本理念是提高学生的科学素养，实验是教师和学生展现科学素养的舞台。科学素养包含了科学的基础知识和基本技能。基本技能部分又明确要求学生会设计实验、进行实验操作，而学生实验素养的培养很大一部分决定于教师的实验素养。作为教学一线的教师，其一举一动都会成为学生学习模仿的对象，所以教师和学生实验操作的规范、有序开展就显得尤为的重要。%The basic idea of the new curriculum standard is to improve students' scientific literacy. Scientific literacy includes both the basic knowledge and basic skills. To improve student’s basic skills, it is necessary to enable them to design and operate experiments and the quality of teachers plays a significant part. Therefore, the standardized and scientific operation of the experiments is especially important.
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