what sets of oppositions regarding facts and imagination in the opening chapters of hard times

The novel begins with a short introduction. Inside a classroom, "the speaker" repeats the exclamation "Now, what I want is, Facts." He presents the argument that the formation of a child's mind must be rooted in the study of fact. The schoolroom is as hard and plain as the teacher's teaching style. All of the children are focused on him. Besides "the speaker" there is also "the schoolmaster and the third grown person" who stand before the pupils.

I am here for the share red ball and bouncing balls