多媒体信息加工之“视频信息的采集与加工”

首先,本节课重在锻炼学生的实践操作能力,通过任务驱动和分组的方式进行教学,各任务之间由易到难、逐层深入,为操作较熟练的同学设置"试一试"的任务练习,充分体现了分层次教学。其次,本节课以学生独立完成为主,较难的操作采取组内讨论的方式解决(注意小组之间的评比,优胜小组加以奖励),教师注意学生操作中存在的问题,汇总后进行精讲点拨。最后,课堂评价以视频作品展示的形式进行,先为小组互评,然后教师进行点评。整节课都以学生为主体,教师充当导演者引领学生进行自主学习。

Multimedia Information Processing Collection and Processing of Video Information

First,this class accentuates the formation of the practical manipulating capability by showing tasks in groups,and they are arranged from easy ones to hard ones gradually,for those who are skillful,some "let me try" operations are prepared,which is the embodiment of the "step by step" method.Secondly,this class was finished mainly by the independent operation of the students,and the hards ones was manipulated by discussing inside the group before competing among groups and honoring the better ones.The teacher pays attention to problems in the students'operation and explain them after gathering them.Thirdly,the evaluation of the class was manipulated by showing videos,including remarking among groups and from the teacher.The whole class gives priority to the students,and the teacher plays the role of a guider leading the students to learning by themselves.