Guidelines and Standards for Tactile Graphics 11.2.3 states that graphics for grades K-3 should be drawn. Draw the bar model and the bracket underneath. Use underscores for the blanks provided for writing answers in the left part of the box model and in the center underneath. The solid square should be done as a tactile square rather than a braille-dot shape symbol at this age as well. Do not draw a rectangle for the large blank workspace.