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Why they will hate it: Although this was considered high tech in the '70s after the fixed blackboards of the 1960s it had three faults; You had to concentrate on the blackboard in case the lesson rolled round and you missed what was going on. It needed chalk which was usually missing due to being thrown at unruly pupils, You had to copy down relevant information as it was written down during the lesson.
What they want instead: Any device which can receive the lesson from the smart screen over WiFi.
Image credit: ebay