The purpose of this paper was to make clear the characteristic of the ideology and practice of science education of B. M. Parker who was a science teacher at the Laboratory Schools of the University of Chicago by clarifying her view of science education and so on. The results were as follows: (1) At the Laboratory Schools of the University of Chicago, an experience was taken directly and seriously in the elementary school primary grades and emphasis was placed for learning scientific concepts by the intermediate grades; (2) The contents of science curriculum were taken up from each territory of physics, chemistry, biology and earth science. The same contents were dealt with in more than one grade, and contents of science curriculum were spiral structure; (3) Before the guidance of science unit, it was thinking about four composition models. It followed in a grade's rising, and the rate which independent study occupied with a unit was big; (4) When the educational meaning of the reading matter subject in science education was fully grasped, mimeograph printing materials were prepared, and B. M. Parker was being used in the class. This was connected with the publication of 'the Basic Science Education Series' afterwards.