subitize 的定义
su·bi·tized, su·bi·tiz·ing.Psychology.
- to make an immediate and accurate reckoning of without needing to pause and actually count them: for an average adult, the maximum number of such items is generally observed to be six: No one on our team was able to subitize the sets with eight or more triangles.It seems that some people can subitize more proficiently at certain times of the day.