Here are the students waiting for their turn to subitize:)
I loved this idea for a domino doubles snack from Bishop's Blackboard and decided to turn it into a subitizing activity. Each student was given a domino to recreate and then hide. Each student had the chance to bring their graham cracker and chocolate chip domino up to the document camera for the other students to guess what number it was. The students lifted their top plate for 3 seconds while the other students tried to guess the number.