If I asked you to draw the configuration for the 9 of diamonds, could you do it? Probably not! We tend to look at the numeral 9 instead of the set of 9 diamonds or the number! So try this: When playing card games, if you are working on subitizing and want the children to develop instant recognition of the configuration on the card, cut off the numerals in the corner. This way the children will look at the configuration and build fluency with number!