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Subitizing: Developing Number Sense in K-2

Subitizing: Developing Number Sense in K-2

I recently had a conversation with a friend about different ways to get her second graders to learn their addition and subtraction facts.  She was looking for alternatives to flashcards.  So I shared with her something I do with K-2 students called subitizing.  Subitizing is being able to quickly recognize the number of objects in a small set without needing to count any of the objects.  Think about rolling a die.  When that die settles, a quick glance tells you…

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Subitizing: Developing Number Sense K-2

Subitizing: Developing Number Sense K-2

Subitizing is being able to quickly recognize how many objects are in a small set without having to count the objects. In this short video I show how to use dot cards, dice, 10-frames, and dominoes in developing number sense skills so important for success in mathematics. .