Three iterations of the red rod represent
the fraction 3/4.
Five iterations of the white rod represent
the fraction 5/8.
Use two brown rods to represent two wholes.
The brown rods can each be partitioned into four 
equal parts, represented by the red rods, to show fourths.
A line can then be drawn to represent the
distance  from 0 to 3/4 on the number line.
