Use your cursor to roll over the box below.
(Don’t blink.)







How many dots did you see?

Are you sure?

You might guess and be correct, but you are unlikely to be 100% certain of the number of dots at first glance.




Roll over this box.







How many dots did you see?

Four.

The ability to see four dots in a square pattern and know there are four without counting is an example of subitizing.




Keep the picture of four dots in your mind.

Now roll over this box.







How many dots did you see?

Did you see eight dots?

Which was easier to see, this pattern of eight dots or the row of eight dots above?