The research aims to define cognitive thinking skills included in social studies curricula (pupil,s book+ teacher,s book) according to Sternberg, distribution to the basic third grade, for that researcher designed a list of cognitive thinking skills must included in curricula,s content, it consists of: (8) main skills, (20) skills, and (29) evidence significant skills, and used this list in analizing content of social studies curricula that is research, sample.