实验教学是小学科学教学的重要组成部分,是培养学生动手动脑、解决问题、创新能力的重要途径。通过引导学生亲身经历,以小组合作中的角色自定、角色互换和角色互助等探究过程,让学生在探究中“活”起来,建构其科学知识、技能和态度,学会科学方法,培养尊重事实和善于质疑的科学态度,真正提高学生的科学素养。 Experimental teaching is an important part of science teaching in primary schools. It is an important way to train students’ ability to solve problems and innovate. By guiding students to experience firsthand, exploring the process of role selection, role exchange and role mutual aid in group cooperation, students are encouraged to build up their scientific knowledge, skills and attitudes, learn scientific methods, Cultivate scientific attitude of respecting facts and being good at questioning so as to truly improve students’ scientific literacy.