《课程标准》指出:“对学生评价注重评价与教学协调统一。强调过程评价与结果评价并重。”“活动表现评价为全面了解学生的科学素养的发展水平提供了有效的途径,通过活动表现评价鼓励多样化学习方式,促进学生的全面发展。”学生的实验过程是学生学习活动表现、自我能力体现的一个过程。对这个过程进行过程性评价,是把评价置于真实、具体的情景中,因此显得更为重要、更有意义。过程性评价,作为师生交流的一种有效方式贯穿于课堂教学活动的始终,其现场性、及时性的特点,可以对教学活动起着重要的导向和激励作用,使教学过 “Curriculum Standard” states: “The evaluation of students pays attention to the harmonization of evaluation and teaching, stressing both process evaluation and result evaluation.” “Performance evaluation provides an effective way to fully understand students’ level of scientific literacy through Activity performance evaluation encourages diversified learning methods to promote the all-round development of students. ”Students ’experimental process is a manifestation of students’ learning activities and self-abilities. The process of evaluation of this process is to put the evaluation in a real, concrete scenario, so it is more important and more meaningful. As an effective way of teacher-student communication, procedural evaluation runs through the teaching activities in the classroom. Its on-site and timely characteristics can play an important guiding and inspiring role in teaching activities.