Equivalent Fractions

Trevor Kuzee had the idea for this visualization. Enter two fractions in the input boxes and the sketch will show them as part of a pie. The sliders let you divide up each piece of the pie into that many equal pieces. What patterns do you notice as you increase m or n? How can you make equal size pieces to compare the two fractions? You can move the circles by dragging the center points to directly compare.
More GeoGebra at bit.ly/mh-ggb