科学是一门包括物理、化学、生物、地理、天文等知识的综合性学科。内容之多,范围之广,而且科学涉及很多的实验。科学又是以实验和观察为手段,实验是进行科学研究最重要的环节。因此,实验环节设计的有效性对培养学生严谨的实事求是的科学态度、提高学生的动手能力和实验探究能力等起着举足轻重的作用。 Science is a comprehensive discipline that includes knowledge of physics, chemistry, biology, geography and astronomy. As much content, a wide range, and science involves a lot of experiments. Science is based on experiments and observations as a means of experiment is the most important part of conducting scientific research. Therefore, the effectiveness of the experimental part of the design of students to develop rigorous practical scientific attitude, improve the ability of students and experimental exploration play a decisive role.