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A comment on Ask HN: Sources for recreational math for kids?.

Re:Ask HN: Sources for recreational math for kids? by ehudla on Sunday October 23, 2016 @04:06AM (#12772536)
Two nice resources, though not recreational in the way I had in mind, are The Number Race and The Number Catcher.

http://thenumberrace.com/nr/home.php

http://www.thenumbercatcher.com/nc/home.php

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