Press the flag to have the two fractions move toward each other. When they stop press:

• up arrow key to reset the numbers on top.
• left arrow key if fraction on left is the smallest.
• right arrow key if fraction on right is the smallest.
• down arrow key if the fractions are equivalent.

When you get tired of watching the fractions blow up, reset the numbers on top and try to get 20 correct answers in a row! OK?