These microfibre cloths are useless in the classroom. What's wrong with the
old wooden backed blackboard rubber-outer. They could hit a pupil on the ear
at 20 yards and stop any games one was playing under the desk or any idle
chat. How can a microfibre cloth do that, unless the teacher wrapped it
around a golf ball ?
Perhaps the teacher should take in to class a vacuum cleaner and a vacuum
bag. Placing the cloth in the bag and using the accessories to suck out the
air may remove any dust and keep the cloth in a small package overnight.
If it doesn't work the teacher can remove any attachments and throw them at
naughty children so it won't be an entirely wasted exercise.
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