Use the Rectangle with unit height tool to create strips of any length segment by segment. Just place two points anywhere on the grid. The height of the strip will be 1 grid sqare.
Use Custom Fraction Strip (CUST) tool to create strips with any size and number of equal parts. Place two points and enter the number of parts. The height of the strip can be adjusted by the third point.
Use the Numerator (NUM) tool to highlight any part of the custom fraction strip. Click on all three contol points of a given fraction strip (the order of clicks matters!) and a blue adjustable region will appear in the fraction strip.