Create [math]\frac{2}{3}[/math] on the left rectangle. Then on the right triangle show that [math]\frac{2}{3}[/math] is equivalent to [math]\frac{6}{9}[/math].
Create [math]\frac{3}{5}[/math] on the left rectangle. Then on the right triangle show that [math]\frac{3}{5}[/math] is equivalent to [math]\frac{6}{10}[/math].
Create your own problem showing two fractions that are equivalent to each other.
Is [math]\frac{1}{4}[/math] equivalent to [math]\frac{2}{7}[/math] ? How can you prove it?