一、多媒体——拓宽了课前准备渠道课前准备是学生构建和丰富认知结构的重要环节。它的作用在于既巩固原有知识又在于为学习新知打下基础,而利用多媒体教学不但能打破空间、时间的限制,及时传递信息,拓宽学生的学习渠道,扩大知识面,而且为学生提供了更为广阔的自主学习、个性化学习及协作学习空间。 First, multimedia - to broaden the pre-preparation channel Pre-class preparation is an important part of students to build and enrich the cognitive structure. Its role is to both consolidate the original knowledge is to lay the foundation for learning new knowledge, and the use of multimedia teaching can not only break the space and time constraints, timely delivery of information, broaden students’ learning channels, to expand knowledge, but also to provide students with more For the vast autonomous learning, personalized learning and collaborative learning space.