“finally overcoming the gravity of the cube and pushing it away with the child’s hand and fingers … drawing the child’s strength, although yet so feeble, into the play, that his limbs may be trained, his strength increased, and that he may experience and perceive much through his own activity.”—P., p. 77.

By even these few representations the mother can present to her child:

“The quiet, firm sure-standing on a relatively larger surface; the filling of space by each object; heaviness which is expressed by pressure; the final overcoming of heaviness (gravity); and the possibility of moving away the body by the use of a proportionately greater strength. The perception of all these and many other facts, showing themselves merely as changing phenomena in oft-recurring repetition, will give pleasure even to the child who is scarcely half a year, or at least not a whole year old, especially when the play is placed in intimate connection with the child’s life, and with his impulse to activity.”—P., p. 78.

Many plays are suggested, all to be accompanied by song or rhyme, only, says Froebel, “one must not go on in opposition to the wish of the child, but always follow his requirements and needs and his own expressions of life and activity.”

It is in this connection that Froebel notices how early a child begins to note cause.

“Even the child whose capacity for speech is as yet undeveloped will remark the cause of the fall of the cube, at least experience has shown us that children of this age drew away the holding support, and, as the cube then fell over, turned toward their mother with face and body as in joyous triumph.”—P., p. 80.

The sphere and cube are also to be compared as to shape:

“Through all that has been done hitherto, the child’s attention has been predominantly called to the object, as filling space, and acting, but only incidentally to the object as being the identical one; nor yet to the figure and shape, nor to the members and parts. But attention to the form and figure of the object can also be utilized for the child in play.”—P., p. 83.

So the mother is directed to hide the cube in her hand and show it again—so that the child will watch for its reappearance.