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. .
I love doing this activity with kindergartners and first graders! Not only is it a great way for them to practice their addition facts but these little guys LOVE writing on their individual white board, so it’s a win/win! And it’s so simple. Here’s what you do: Without turning it on, put ONE domino on the overhead projector or doc camera. Tell students that you are going to flash a domino for a few seconds and their job is to…