I cannot honestly imagine teaching 40 children at one time, yet the Chinese teachers were able to do it without a single reprimand.

我不能想象同时教40个学生，但中国的老师却能做到，而没有一点训斥。

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Nowadays foreign language teachers face many unsolved problems such as the single teaching method, dull teaching environment, lack of staff, out of date teaching materials.

目前我国外语教学存在着教学方法单一、教学环境单一、教师严重缺编、教学内容相对滞后等问题。

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Rhys Williams from NUT Cymru said that while they believed the new subjects were a good idea, they were concerned whether teachers would be capable of teaching every single subject.

BBC: NEWS | UK | Wales | Timetable for '21st century life'

At the heart of almost all of these issues is the problem of scale: of finding ways to make high-quality educational resources--whether it's brilliant teachers, innovative lesson plans or inspiring new teaching methods--reach not just a handful of students in a single classroom but hundreds of millions of students around the globe.

FORBES: Magazine Article