Equivalent Fractions or Not?

This applet explores the idea of equivalent proper fractions.  The top part of the screen is the reference area. Here we enter a new proper fraction and see it as a part of a unit square. The bottom part of the screen is for experimenting with the fraction.
  • Enter a new proper fraction.
  • Drag the slider to select a non-zero whole number.
  • Click on the "Multiply" button to multiply the numerator and the denominator by this number.
  • Drag the "Compare the Fractions" slider to represent the original and the new fraction on the number line.
  • Click the "Add" button to experiment with adding the same number to the numerator and the denominator.
  • Drag the "Compare the Fractions" slider to represent the original and the new fraction on the number line.