Math Coach's Corner There's no doubt about it...subitizing is all the rage! It's not a new concept, though. According to Wikipedia the phrase was first used in 1949. So why are we just hearing about it now? My theory is that the popularity of subitizing is directly connected to the implementation of the Common Core State Standards for Mathematics, which stress conceptual understanding over rote memorization.
Original article and pictures take http://mathcoachscorner.blogspot.com/2013/07/using-dot-cards-to-build-number-sense.html site
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