Fraction Between Two Fractions
This applet gives a visual proof that the fraction [math]\frac{a+c}{b+d} [/math]is between [math]\frac{a}{b}[/math] and [math]\frac{c}{d}[/math] if [math]\frac{a}{b}[/math] and [math]\frac{c}{d}[/math] are not equivalent fractions.
