建构主义的教学理论认为:知识不是通过教师传授得到,而是学习者在一定的情境即社会文化背景下,借助其他人(包括教师和学习伙伴)的帮助,利用必要的学习资料,通过意义建构的方式而获得。新课程实施过程中“预学”环节越来越受到重视。“预学”不是指学生脱离教师的指导以个体的形式独立完成相关内容的学习,也不仅仅是部分学习内容的前置。而是在相关教师认真研究学科知识体系、阶段教学计划、学生实际知识水平等基础上,布置一定的预学任务或指南,学生 Constructivism teaching theory holds that knowledge is not taught through teachers but that learners, with the help of other people (including teachers and learning partners), make use of necessary learning materials and construct through meaning in certain contexts, ie social and cultural contexts Way to get. During the implementation of the new curriculum “pre-learning ” link more and more attention. “Pre-learning ” does not mean that students are independent of the teacher’s guidance to complete the relevant content independently in the form of individual learning, nor is it just the front part of the learning content. Instead, the relevant teachers carefully study the subject knowledge system, the stage of the teaching plan, the actual level of knowledge of students, based on the arrangement of a certain pre-mission or guide, students