Children practice drawing rectangular prisms above and below the eye point:

1. Draw a box at the left of the eye.
2. Draw a box at the right of the eye.
3. Draw two boxes, one at the left and one at the right of the eye and use the same center of vision.
4. Draw a box at the left of the eye and turn it into a waste paper basket.
5. Draw a box at the right of the eye and turn it into a waste paper basket.