Enter two fractions with different denominators and click [b]Next[/b]. Then use the ▲ and ▼ buttons to change the equivalent fractions until both fractions have the same denominator.[br][br][size=85]Note: This app is adapted from [url=https://www.geogebra.org/m/efmacdw8]Duane Habecker's app[/url].[/size]