目前不少小学课堂教学中预习存在着预习目标不明确、预习内容单一、预习方法不足、预习主体参与不均衡等问题,课前预习流于形式,影响预习效果。怎样的预习才是有效的?怎样才能做到有效预习?这是一线教师们都会面临的一个难题。为了解决这个问题,在“礼乐教育”课题的引领下,学校数学课题组进行了“基于自然法的数学预习任务支架设计和实施的行动研究”的子课题研 At present, there are many problems in previewing classroom teaching, such as ambiguous preview target, single pre-study content, insufficient previewing method and unbalanced participation of pre-study participants. What kind of preview is effective? How can we do an effective preview? This is a front-line teachers will face a problem. In order to solve this problem, under the guidance of the subject of “Ritual Education”, the school mathematics research group carried out a sub-project of “Action Research on the Design and Implementation of Task Scaffold Based on Natural Law”