求翻译：于是出现了这样的景象：课堂里，老师操作鼠标，让投影仪整堂课亮个不停，信息量固然增加了，但学生用于观看屏幕信息的时间不长，而独立探究、阅读、实践的时间很短。是什么意思？

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And then there was a scene in the classroom, and the teacher operating a mouse, and let the projector the lesson is on continuously, the volume of information is increased, but the students used to view information on the screen is not a long time, and an independent inquiry, read, practice for a sh

Therefore appeared such picture: In the classroom, teacher operates the mouse, lets projecting apparatus entire hall class bright not stop, the information content no doubt increased, but the student uses in watching the screen information the time not to be long, but inquired into independently, re

There is such a picture: classroom teacher operating a mouse kept the whole lesson of the projector, the information is added, but students are for viewing information on the screen is not long, and the independent study, reading, practice time is shorter.

正在翻译，请等待...