“下水实验”:小学科学有效备课的必要环节

“Teachers' Own Pre-class Experiment” and Effective Preparation for Primary School Science Classroom Teaching

在科学课中,教师在教学开展前亲自设计并进行尝试实验,获得第一手资料,从而有效指导学生科学探究的行为称之为"下水实验"。教师若不能扎实地开展"下水实验",必将大大降低课堂效率,"下水实验"应成为科学教师有效备课的必要环节。教师通过对"下水实验"的不断重视和研究,可以弥补科学实验材料的不足、改进实验方法、关注细节问题、优化小组合作等,从而不断提高课堂效率。

＂Teachers＇ own pre -class experiment＂ indicates that, before Science classroom teaching, teachers themselves design and carry out pilot experiment and obtain the first-hand data so that they could effectively guide students＇ actions of scientific exploration. But if teachers can not do so, classroom teaching will definitely be less efficient, so this kind of teachers＇ experiment should be the necessary step for their effective preparations for classroom teaching. Teachers＇ constant emphasis and research could make up for lack of scientific experimental materials, improve the approaches, focus on the detailed questions and optimize group cooperation for a continuous improvement in classroom teaching efficiency.