《义务教育小学科学新课程标准(2011版)》指出:科学学习要以探究为核心。探究既是科学学习的目标,又是科学学习的方式,亲身经历以探究为主的学习活动是学生学习科学的主要途径。可是,当前的课堂教学中,许多实验操作活动是教师设计好操作流程,学生在指令或模仿中完成的,一旦放手让学生进行实验操作,学生往往眼高手低,不知从何下手。另外,虽然教师指导了大量的操作实验,但是,学生的实验操 “Compulsory Education Primary Science New Curriculum Standard (2011 Edition)” pointed out: science learning to explore as the core. Exploration is not only the goal of science learning, but also the way of science learning. The first-hand learning activities that inquiry-based learning is the main way for students to learn science. However, in the current classroom teaching, many experimental operation activities are designed by the teacher for the operation process. The students finish the instruction or imitation. Once letting go and let the students carry out the experimental operation, the students tend to be low-profile and do not know where to start. In addition, although the instructor instructed a large number of operational experiments, however, the students’ experimental exercises