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Another lighting problem, brought about since the introduction of data projectors into classrooms, is glare reflecting off the projection screen into pupils' eyes.

还有一个因使用数码投影仪带来的光照问题，即学生常常受到从投影屏反射的强光照射。

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Professor Michael Barber of London University said pupils could spend half their time at school, half at home as a way to solve this problem.

伦敦大学的迈克尔·巴伯教授说，为了解决这个问题，学生可以一半时间待在学校，一半时间待在家里。

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For these schools with huge budgets to apply to the problem of educating their pupils, ebooks are much more like software.

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This problem is worse among primary pupils, says the Kellogg's report, because they find it harder than secondary pupils to "fend for themselves".

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School exclusions and truancy are part of the problem, but keeping disruptive pupils off the streets may not be compatible with raising standards in the classroom.

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