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guai898on Ancient Board Game Found in Looted China Tomb

There is more detail description and photo of games pieces recovered from other tombs in the Chinese Wiki: https://zh.wikipedia.org/wiki/%E5%85%AD%E5%8D%9A

guai898on Countries That Don't Exist

Taiwan is probably the largest "invisible" country. 23 million people Army personnel : 290,000 Tanks: 2,005 Total aircraft: 804 Submarines: 4

guai898on Singapore employs a mathematics teaching method called productive failure

This might be suitable for motivated students. I don't think it will work for everyone.

guai898on Taiwan President Ma Ying-Jeou to Meet Chinese President Xi Jinping in Singapore

This is big. It can be a game changer for politic in Asia

guai898on Ask HN: My school needs a data storage solution

I totally agree. School is a complicated environment. There is a reason that legacy system survives so long. It is extremely difficult to introduce new solution into public school. There are regulations and many stack holders. Just don't do it.