《科学课程标准》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。科学课堂应给学生提供充分的科学探究机会,使他们在进行探究学习的过程中,体验学习科学的乐趣,增长科学探究能力,获取科学知识, “Science Curriculum Standards” 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. Scientific classrooms should provide students with adequate opportunities for scientific inquiry so that they may experience the joy of learning science, increase the capacity of scientific inquiry, acquire scientific knowledge,