School days are back again! A look at this puzzling clock and you know what I mean….the blackboard, chalk marks and most importantly what the marks represent. I assume all these Mathematical stuff used to drive you crazy!!!

But this is not at all a fearful stuff with an awful lot of calculations involved. It’s a pretty geeky way of representing the specific hour, and of course for improving the Mathematical skills for kids or children…not to mention it is  good for boosting their abilities on the subject too. This 11.5″ Pop Quiz Clock with its unique representation of calculations by look-a-like chalk marks on a circular blackboard is priced at $26.99.

[source: thinkgeek.com]